Recovery Of Boron Research Articles

Optimal conditions for recovering boron from seawater using boron selective resins

We determined the optimal conditions for efficient recovery of boron from seawater using boron selective resins (BSRs). A commercialized BSR named CRB05 was adopted and prepared in two particle sizes: A fine-particulate BSR (effective particle size of 105 μm) and a coarse-particulate BSR (effective particle size of 445 μm). The performance of the two BSRs was compared in terms of boron adsorption, boron desorption, and BSR regeneration and reusability. During boron adsorption, for fine BSR, optimal reaction time, stirring speed and the amount of BSR needed for the adsorption of boron were 30 min, 150 rpm and 1 g-BSR/L respectively, whereas for coarse BSR, values of the above parameters were 300 min, 150 rpm and 3 g-BSR/L. It indicates that the fine BSR can adsorb boron about threetimes more than the coarse BSR. It also shows that the reaction rate of the fine BSR is almost ten-times higher than that of the coarse BSR. During the boron desorption, no significant difference was found between the efficiencies exhibited by the fine and the coarse BSRs. The best desorption performance can be attained with 11.9 mL/mg-B of 0.05 M H2SO4 and 15.9mL/mg-B of 0.25M HCl, regardless of the particle size of the BSR. Finally, the boron adsorption efficiency can be maintained at a stable level even after reusing the BSRs over ten times. The present study shows a possibility to recover boron with better efficiency from seawater in short time using the fine BSR, rather than the coarse BSR.

High boron removal by functionalized magnesium ferrite nanopowders

Hydroxyl-enriched materials are promising boron adsorbents. However, the use of these materials is hampered by issues of separation, recovery, and selectivity, notably due to the presence of interfering ions. Therefore, we synthesized here a cheap magnetic nanopowder, which was further functionalized with polyvinyl alcohol and glycidol to produce boron-selective adsorbents. We studied their selectivity and removal efficiency using batch and fixed-bed systems. Sorption was studied at both concentrated and trace amounts of boron. Results show that nanopowders have 5.3–6.5 nm pore sizes and 145–203 m2/g surface areas, using Brunauer–Emmett–Teller analysis. Polyvinyl alcohol-functionalized particles removed 93 % of boron at 5 mg/L at pH 7 in 30 min, whereas only 68 % of boron was removed by glycidol-functionalized particles. However, at higher boron concentration, of 50 mg/L, glycidol-functionalized particles showed higher adsorption affinity of 68.9 mg/g. We conclude that internal hydroxyl groups of polyvinyl alcohol-functionalized particles are less accessible at higher boron concentration. This is the first report on magnesium ferrites for boron recovery. The spent adsorbents were separated easily from the aqueous media by an external magnet and repeatedly used. Overall, our findings demonstrated that the hydroxyl-enriched magnetic nanopowders are a better alternative to the existing boron adsorbents regarding magnetic separation, reusability, and selectivity.

Rejection of nuclides and silicon from boron-containing radioactive waste water using reverse osmosis

Abstract Reverse osmosis has been successfully utilized for waste separation across various fields. In this work, RO membrane was investigated for the separation of weakly electrolytic silica and boron, which was meaningful for potential boron reuse and waste reduction during treatment of low level radioactive waste water. The influences of temperature, pressure, and pH were tested. As the recovery rate rose to 80%, the flux decreased and the permeate concentration increased slightly. A higher temperature of 55 °C led to a higher silica and boron separation efficiency without a large loss in nuclides rejection. Under these conditions the recovery of boron is 46.58%, and the decontamination factors (DF) of silicon, Cs, Sr, and Co are 29.3, 4.54, 58.88, and 70.41, respectively. Assuming reasonable system design, the recovered water containing a high concentration of boron and a low concentration of silica is acceptable for reuse.

Recovery of Boron and Separation of Lithium from Uyuni Salar Brine using 2, 2, 4-Trimethyl -1, 3-Pentanediol (TPD)

In the present study, extraction and separation possibilities have been established for boron and lithium from Uyuni salar brine. Diols were shown to be effective extraction reagents for boron. The present scientific study was developed with 2, 2, 4-trimethyl-1, 3-pentanediol (TPD) as an extractant system. For fixing the diluent system, various diluents were tested and it was found that chloroform is a better diluent for boron extraction. Further, experimental studies on the extraction equilibrium time, pH influence, and phase ratio effects on boron extraction were conducted and the conditions for boron recovery and lithium separation were optimized. The McCabe Thiele diagram was established to optimize the number of extraction stages for boron extraction. Finally, stripping studies of boron from the loaded organic phase using various salts were performed. Received October 31, 2014)

TAXAS DE RECUPERAÇÃO DE BORO POR EXTRATORES EM SOLOS DA BAHIA E DE MINAS GERAIS, NA PRESENÇA E AUSÊNCIA DE CALAGEM

As informações referentes às taxas de recuperação do boro pelo extrator em razão das doses adicionadas são escassas e necessárias para os sistemas de recomendação de adubação e corretivos. Esta pesquisa teve o objetivo de determinar as taxas de recuperação desse nutriente com água fervente e CaCl2 fervente em solos dos Estados da Bahia e Minas Gerais, na ausência e na presença de calagem. O experimento foi instalado em casa de vegetação, utilizando tratamentos em esquema fatorial (6 × 2 + 9) × 6, correspondendo a seis solos com e sem calagem, nove solos sem calagem e seis doses de B. Utilizaram-se blocos casualizados, com três repetições. As unidades experimentais foram constituídas por 0,6 dm3 de solo. A calagem foi calculada com base na análise de solo, seguindo a recomendação de calagem usada para o Estado de Minas Gerais. Após 15 dias de incubação, os solos receberam doses de B (0,0; 1,5; 3,0; 6,0; 9,0; e 15 mg dm-3), fazendo-se uma nova incubação por um período de 45 dias. Usou-se ácido bórico como fonte de B. Terminada a incubação, o teor de B disponível foi extraído com água fervente e CaCl2 5 mmol L-1 fervente, sendo a dosagem feita com azometina-H. Foram feitas análises de regressão e correlação para as diversas variáveis. O B extraído do solo com água fervente e o CaCl2 fervente, independentemente da calagem, aumentou linearmente com a elevação das doses aplicadas desse nutriente aos solos. Os extratores água fervente e o CaCl2fervente não são sensíveis à calagem. As taxas de recuperação de B dos solos pelos extratores usados variam de acordo com os teores de matéria orgânica, a quantidade e qualidade de argila e pelo equivalente de umidade. Os extratores utilizados foram altamente correlacionados entre si na extração do B do solo.

Precipitation recovery of boron from aqueous solution by chemical oxo-precipitation at room temperature

This work investigated the effective precipitation recovery of boron by chemical oxo-precipitation (COP), which uses hydrogen peroxide (H2O2) to transform aqueous boron to easy-precipitating perborates at room temperature. By using barium hydroxide (Ba(OH)2) as a precipitant, the boron removal enhanced with treatment time and the boron level was eventually reduced from 1000ppm to 3ppm in four hours. The transformation of the precipitates from amorphous to crystalline was assumed to be responsible for such high boron removal. The aqueous data and the characterization of the precipitates, including elemental analysis, dissolved oxygen, XRD and Raman microscopy, reveal that the phase transformation of perborate species in the precipitates carried out with time during the COP. Mechanisms of COP that describe the precipitates transformation from BaB(OH)3OOB(OH)3 and Ba(B(OH)3OOH)2 to BaB(OH)2(OO)2B(OH)2 were proposed.

Isobaric Heat Capacity of Boric Acid Solution

The isobaric heat capacities of boric acid solution are crucial for the design of boron recovery systems in nuclear power plants. In this work, the isobaric heat capacities of boric acid solution containing 0.648 mol/kg and 3.700 mol/kg 10B from T/K = (303.16 to 394.25) and up to 5.11 MPa are measured with a flow calorimeter. The expanded uncertainties in temperature, pressure, and isobaric heat capacity were ± 0.02 K, ± 3.20 kPa, and ± 0.0098, respectively. The isobaric heat capacity of boric acid solution decreases when the 10B concentration and pressure increase, and increases as the temperature increases. A correlation equation is presented for the isobaric heat capacities of boric acid solution, the absolute relative deviation between the correlation and experiment is less than 0.6 %.

Determination of δ11B by HR-ICP-MS from mass limited samples: Application to natural carbonates and water samples

We present an improved method for accurate and precise determination of the boron isotopic composition (11B/10B) of carbonate and water samples using a mineral acid matrix and HR-ICP-MS. Our method for δ11B determination utilizes a micro-distillation based boron purification technique for both carbonate and seawater matrices. The micro-distillation method is characterized by low blank (⩽0.01ng-B) and 99.8±5.7% boron recovery. We also report a new ICP-MS method, performed in a hydrofluoric acid matrix, using a jet interface fitted Thermo® Element XR that consumes <3.0ng-B per quintuplicate analyses (±0.5‰, 2σ, n=5). A comparatively high matrix tolerance limit of ⩽50ppb Na/K/Mg/Ca characterizes our ICP-MS method. With an extremely low procedural blank (⩽0.05±0.01ng-B) the present isotope method is optimized for rapid (∼25 samples per session) analysis of small masses of carbonates (foraminifera, corals) with low boron abundance and small volume water samples (seawater, porewater, river water). Our δ11B estimates of seawater (39.8±0.5‰, 2σ, n=30); SRM AE-120 (−20.2±0.5‰, 2s, n=33); SRM AE-121 (19.8±0.4‰, 2s, n=16); SRM AE-122 (39.6±0.5‰, 2s, n=16) are within analytical uncertainty of published values. We apply this new method to assess the impacts of laboratory handling induced sample contamination and seawater physio-chemical parameters (temperature, pH, and salinity) on marine carbonate bound δ11B by analyzing core-top planktonic foraminifera samples.

Boron recovery from seawater with a new low-cost adsorbent material

Abstract A new adsorbent [chiFer(III)] for boron recovery from seawater was prepared using chitosan and iron(III) hydroxide. Experiments were carried out in a column system. Seawater samples were collected from the Mediterranean Sea off the coast of Vilanova i la Geltru, Spain (coordinates: 41.18; 1.75). Several adsorption–desorption cycles were performed to evaluate the efficiency of the adsorbent, and a desorption step was carried out using MilliQ-water of pH 12 (0.01 M NaOH solution). The molar ratio between the mass of adsorbed boron in the five consecutive cycles and the mass of iron(III) hydroxide present in the adsorbent beads was 10.7 mmolB· ( mol Fe ( OH ) 3 ) - 1 . The experimental results were evaluated using the Thomas, Yoon and Nelson, and Bohart–Adams models, which fitted the experimental data adequately. The adsorbent was characterized by SEM-EDX analyses and BET surface; porosity studies confirmed that the chiFer(III) composite is a mesoporous material.

Adsorption of 2-Butyl-2-ethyl-1,3-propanediol from Aqueous Solutions on Activated Carbon: Salt-Out Effect on Equilibrium, Kinetics, and Dynamics

In recent decades, 2-butyl-2-ethyl-1,3-propanediol (BEPD) has been extensively evaluated as an efficient extractant for the recovery of boron from brine solutions commonly present in magnesium chloride. The BEPD leaked into the raffinate must be recovered in order to make the process of solvent extraction cost-efficient. The present study examined the feasibility of a commercialized coal-based activated carbon to recover BEPD from brine solutions. The salt-out effect on adsorption isotherms and kinetics of BEPD from brine solutions with salt concentrations up to 100 g/L were reported at different temperatures (20 °C, 30 °C, 40 °C, and 50 °C). It was found that the saturated adsorption capacities were significantly enhanced from 192 mg/g in the deionized water to 238 mg/g in the brine solution with an MgCl2 concentration of 100 g/L at 30 °C. Kinetic analysis indicated that the adsorption kinetics of BEPD followed the pseudo-second-order equation, and the pseudo-second rate constant (k2) affected by the var...

An improved procedure for separation/purification of boron from complex matrices and high-precision measurement of boron isotopes by positive thermal ionization and multicollector inductively coupled plasma mass spectrometry.

In order to eliminate boron loss and potential isotopic fractionation during chemical pretreatment of natural samples with complex matrices, a three-column ion-exchange separation/purification procedure has been modified, which ensures more than 98% recovery of boron from each step for a wide range of sample matrices, and is applicable for boron isotope analysis by both TIMS and MC-ICP-MS. The PTIMS-Cs2BO2(+)-static double collection method was developed, ensuring simultaneous collection of (133)Cs2(11)B(16)O2(+)(m/z 309) and (133)Cs2(10)B(16)O2(+) (m/z 308) ions in adjacent H3-H4 Faraday cups with typical zoom optics parameters (Focus Quad: 15 V, Dispersion Quad: -85 V). The external reproducibilities of the measured (11)B/(10)B ratios of the NIST 951 boron standard solutions of 1000 ng, 100 ng and 10 ng of boron by PTIMS method are ±0.06‰, ±0.16‰ and ±0.25‰, respectively, which indicates excellent precision can be achieved for boron isotope measurement at nanogram level boron in natural samples. An on-peak zero blank correction procedure was employed to correct the residual boron signals effect in MC-ICP-MS, which gives consistent δ(11)B values with a mean of 39.66±0.35‰ for seawater in the whole range of boron content from 5 ppb to 200 ppb, ensuring accurate boron isotope analysis in few ppb boron. With the improved protocol, consistent results between TIMS and MC-ICP-MS data were obtained in typical geological materials within a wide span of δ(11)B values ranging from -25‰ to +40‰.

Boron removal from water and its recovery using iron (Fe+ 3) oxide/hydroxide-based nanoparticles (NanoFe) and NanoFe-impregnated granular activated carbon as adsorbent

This study presents information obtained by the synthesis of Fe(3) oxide/hydroxide nanoparticles sol (NanoFe) and NanoFe-impregnated granular activated carbon as adsorbents for boron removal from solutions. The research describes an adsorption method for cleaning a solution containing boron contaminants followed by recovery of the adsorbent and the adsorbed material for safe removal or further reuse. The technology provides an efficient method of boron removal from water. A marked effect of NanoFe and NanoFe-impregnated GAC adsorbents concentration and pH level on boron removal efficiency was demonstrated. At least 95–98% boron recovery efficiency is possible using NanoFe sol and Fe-impregnated GAC that in fact also recover the adsorbent for reuse. Boron adsorption onto the NanoFe-impregnated GAC adsorbent may be described by pseudo-second-order reaction kinetics and the Langmuir isotherm model. The boron adsorption capacity on iron (3) oxide nanoparticles and Fe-impregnated GAC at an equilibrium concentration of 0.3mg/dm3 as B in the solution is much higher than these values for similar adsorbents reported in the literature.

Boron recovery from high boron containing wastewater using modified sub-micron Ca(OH)2 particle

In the present study, two modified calcium hydroxide (Ca(OH)2) particles, sub-micron Ca(OH)2 made by CaCl2 and Ca(NO3)2, were applied to improve efficiency of boron recovery from concentrated wastewater under mild temperature conditions. The two modified calcium hydroxide particles led to higher recovery efficiencies at 95 °C for 1 h (77.2 and 76.3 %) as compared to the efficiency by using un-modified Ca(OH)2 (67.2 %). The difference was due to their different particle size constitutions. For the reaction kinetic of boron removal, it was found that the pseudo-first-order model fitted well in the experimental data. The sub-micron Ca(OH)2 were used to remove and recover boron from a polarizer manufacturing wastewater. The findings revealed that it is worth recovering the boron containing precipitates because of the close boron content in the precipitates (sub-micron Ca(OH)2 made by CaCl2: 7.0 %, sub-micron Ca(OH)2 made by Ca(NO3)2: 7.1 %) as compared to natural boron minerals (borax: 11.3 %). In addition, in order to estimate energy efficiency of boron recovery by chemical precipitation method, an evaluating formula, energy consumption of boron uptake, was developed. The value of energy consumption of boron uptake by using sub-micron Ca(OH)2 made by CaCl2 with the optimum condition was comparatively high (35.4 μg-B/g-Ca(OH)2/kJ). Therefore, the sub-micron Ca(OH)2 particles were observed more effective for boron recovery from concentrated wastewater under moderate temperatures.

An innovative process for extracting boron and simultaneous recovering metallic iron from ludwigite ore

Ludwigite ore has not yet been utilized on an industrial scale due to its complex mineralogy and fine mineral dissemination in China. Boron–iron separation and dissolution activity of boron-bearing minerals in alkaline liquor are the two key issues in the utilization of ludwigite ore, governing the boron recovery as well as operating cost. This paper proposes an innovative process for extraction of boron and iron from ludwigite ore based on coal-based direct reduction process with sodium carbonate (Na2CO3). The novel process involves reduction roasting, combined leaching and grinding of reduced ludwigite ore, followed by magnetic separation of leach residue, and experimental validation for each of the processing steps is demonstrated. Alkali-activation of boron and metallization of iron were synchronously achieved during carbothermic reduction of ludwigite ore in the presence of Na2CO3. Consequently, boron was readily extracted in the form of sodium metaborate (NaBO2) with water at room temperature during ball mill grinding, and metallic iron powder was recovered from the leaching-filtering residue by magnetic separation. Boron extraction of 72.1% and iron recovery of 95.7% with corresponding iron grade of 95.7% in the magnetic concentrate were achieved when ludwigite ore was reduced with 20% sodium carbonate at 1050°C for 60min.

The concept for an ED–RO integrated system for boron removal with simultaneous boron recovery in the form of boric acid

The concept of an integrated membrane system for boron removal, concentration and boric acid recovery was presented. In this system boron and polyol (e.g. d-mannitol) containing water is first desalinated by electrodialysis (ED) and then, after alkalization, concentrated by reverse osmosis (RO) in a two-stage system. The 1st RO stage permeate contains less than 1mg/L of boron and can be then discarded to the environment or used as feed for the ED concentrate compartment. In the 2nd RO stage boron rich alkaline solution is concentrated to a retentate boron content of 10.8g/L or more. The alkaline retentate is neutralized with a strong mineral acid and then solid boric acid crystallizes. After separation of the solid, the supernatant solution (not only saturated with boric acid but also containing alcohol and salts) is recycled back to the ED desalination step. The above concept was discussed based on the results of the design of an exemplary system in which a wastewater of 75mg/L of boron and TDS of 1.8g/L is treated.

정삼투막에 의한 붕산함유 방사성 폐액 처리를 위한 pH 및 이온강도 영향

일반적으로 역삼투압 공정에 의해 중성 pH 조건에서 40~90%의 붕소를 회수할 수 있다.정삼투공정은 새로운 선진 기술로 폐수처리 및 담수화 분야에서 관심이 높아지고 있다. 본 연구의 목적은 정삼투공정으로 방사성 액체 폐기물의 붕소제거 가능성을 고찰하고자 하는데 있다. 액체폐기물에서의 붕소 제거를 위한 정삼투공정의 성능을 평가하기 위해 pH, 삼투압, 용액의 이온강도 등을 고려하였다. 폐액의 붕산분리능을 좌우하는 주 조업변수인 pH 조건은 pH 7 이하에서 80% 이상의 붕소분리를 달성할 수 있었다. 약 1,000 mg/L 정도의 염농도에서는 막의 물의 플럭스는 거의 영향이 없었으나 붕소 투과율은 약간 감소하는 경향을 나타내었다. 공급액 내 붕소 농도 증가에 따라 붕소플럭스는 선형적으로 증가하였으며, 붕소의 투과율은 약 80% 정도로 일정하였다. In general, boron recovery of 40-90% could be achieved by Reverse Osmosis (RO) membranes in neutral pH condition. As an emerging technology, Forward Osmosis (FO) membrane has attracted growing interest in wastewater treatment and desalination. The objective of this study is to evaluate the possibility of the boron removal in radioactive liquid waste by FO. In this study, the performance of FO was investigated to remove boron in the simulated liquid waste as the factors such as pH, osmotic pressure, ionic strength of solution, etc. The pH of feed solution is a major operating parameter which strongly influences to the permeation of boron and more than 80% of boron content can be separated when conducted at pH values less than 7. The water flux is not influenced but the boron flux and permeation rate tends to decrease in the low salt concentration of 1,000 mg/L. The boron flux increases linearly, but the permeation ratio of reducing boron is nearly constant even with changes in the draw solution concentration.

Electroextraction of boron from boron carbide scrap

Studies were carried out to extract elemental boron from boron carbide scrap. The physicochemical nature of boron obtained through this process was examined by characterizing its chemical purity, specific surface area, size distribution of particles and X-ray crystallite size. The microstructural characteristics of the extracted boron powder were analyzed by using scanning electron microscopy and transmission electron microscopy. Raman spectroscopic examination of boron powder was also carried out to determine its crystalline form. Oxygen and carbon were found to be the major impurities in boron. Boron powder of purity ~92 wt. % could be produced by the electroextraction process developed in this study. Optimized method could be used for the recovery of enriched boron (10B>20at. %) from boron carbide scrap generated during the production of boron carbide.

A high‐throughput system for boron microsublimation and isotope analysis by total evaporation thermal ionization mass spectrometry

Research on the ocean carbon cycle is vitally important due to the projected impacts of atmospheric CO2 on global temperatures and climate change, but also on ocean chemistry. The direct influence of this CO2 rise on the seawater pH can be evaluated from the boron isotopic composition in biogenic carbonates; however, conscientious laboratory techniques and data treatment are vital in obtaining accurate and precise results. A rapid-throughput boron purification and Total Evaporation Thermal Ionization Mass Spectrometry method was developed for high accuracy and precision boron isotopic analysis for small (ng) sample sizes. An improved microsublimation method, in which up to 20 samples can be processed simultaneously under identical temperature conditions, was developed. Several tests have confirmed the viability of this technique. First, seawater and Porites coral samples were processed with H2 O2 and the results compared with those obtained using microsublimation; second, the impact of various sublimation times was evaluated; and third, quantitative recovery was assessed using standard addition. Microsublimation provides a valid method for the quantitative recovery and separation of boron from both major elements and organic matter under low-blank conditions. The close agreement of our results with published values validates the accuracy of the measurements. The isotopic ratio for SRM 951a boric acid isotopic standard was 4.0328 ± 0.0054 (2 STD, n = 25). The reproducibility of boron isotopic composition for standards including AE121, IAEA B-1 and an in-house coral standard UM-CP1 was ±0.68‰ (2 STD, n = 15), ±1.12‰ (2 STD, n = 24), and ±1.17‰ (2 STD, n = 14), respectively. The sample sizes were <1 ng for each measurement. The developed method for preparing and measuring boron isotopic values in a variety of carbonate materials should facilitate the reconstruction of past ocean pH conditions with decadal-scale resolution.

Sample preparation for isotopic determination of boron in clay sediments

The procedures of sample preparation for isotopic determination of boron in clay sediments is very cumbersome, by far, there haven’t been relevant reports on that. In order to establish an effective method for sample preparation, a series of experiments were carried out. In this paper, boron in clay sediments was extracted with HCl solution and purified by two-step ion exchange method. Extracted HCl solution should be adjusted to alkalescency before passing through the Amberlite IRA 743 resin column due to the fact that Amberlite IRA 743 resin absorbs boron only from alkalescent solution. However, a mass of hydroxides of Al and Fe will be precipitated when the extracted HCl solution becomes alkalescent. Hydroxides of Al and Fe have a strong adsorption capacity for boron, which can cause boron isotope fractionation. To treat precipitated hydroxides of Al and Fe, four procedures, namely direct ion exchange (DRIE), decationizing ion exchange (DCIE), once sedimentation ion exchange (OSIE) and repeated sedimentation ion exchange (RSIE) were used and assessed. The influences of the four procedures on separation and extraction and isotopic composition of boron in experimental solutions and clay sediments were also discussed. According to the results, the DRIE, DCIE and OSIE are improper. The result of sample determination indicates that when extracting boron via RSIE, with the increase of precipitation times, there’s an obvious decrease in boron content in the precipitated hydroxides while a sharp increase in recovery of boron and it is favorable for weakening the influence of boron isotope fractionation. But the process of RSIE is time consuming and it may introduce boron. It needs further research to establish a more effective sample preparation method for isotopic determination of boron in clay sediments.

Extraction and Determination of Boron Isotopic Composition in Tourmalines

Tourmaline is an abundant boron-rich alumosilicate mineral with complex chemistry and rich in Fe, Mg, Al, Si elements. In this study, tourmaline samples were decomposed by alkali fusion method, and then the boron was separated and purified using three different procedures. It was found that both Fe3+ and Al3+ ions, rich in tourmaline samples seriously, which affected the accurate determination of boron concentration by Azomethine-H spectrophotometric method and also caused a loss of boron by specific adsorption when large amount of amorphous hydroxide precipitate formed in ion-exchange columns. The addition of small amount of EDTA can eliminate the influence, but brings serious isobaric interference on boron isotopic analysis by TIMS. Finally, a three-column ion-exchange procedure was established including the first mixed resin column, the peristaltic pump coupled boron specific resin column, and the second mixed resin column, which ensures the full recovery of boron (> 99%) from tourmaline samples with complex matrices. The PTIMS-Cs2BO2+-static double-collection method was established by selecting H3-H4 Faraday cups and optimizing parameters in Zoom Optics (Focus Quad: 15; Dispersion Quad: −85) in a Triton TI mass spectrometer. The determined average 11B/10B value of NIST SRM 951 standard boron solution was 4.05044±0.00012 (2σ, n = 8, 1 μg B), which was superior to the dynamic collection method in internal/external precision. A δ11B value of −0.3% for NIST SRM 951 through the same pretreatment procedure was obtained, indicating that there was no isotopic fractionation occurred during the extraction procedure. The comparison of boron isotopic compositions in natural samples by TIMS and MC-ICP-MS after the chemistry procedure indicated that δ11B values determined by the static PTIMS-Cs2BO2+ method were in good agreement with that by MC-ICP-MS.