Mercury In Biological Materials Research Articles

Simultaneous estimation of copper, zinc, cadmium and mercury in biological material by neutron activation analysis

Simultaneous determination of copper, zinc, cadmium and mercury with high sensitivity is possible by neutron activation analysis. After irradiation, the samples are digested and an initial separation of the four elements made by means of an ion-exchange resin. The elements in the separated fractions are then treated to give radio-chemical purity, precipitated, and their activities measured. A purely instrumental technique for the analysis of zinc in samples of biological material is also described. The samples are irradiated for a week and after the activity has decayed for about three months it is measured on a gamma-spectrometer.

607. Problems in assessing exposure to mercury: Berlin, M. (1963). On estimating threshold limits for mercury in biological material. Acta med. scand. Suppl. 396

607. Problems in assessing exposure to mercury: Berlin, M. (1963). On estimating threshold limits for mercury in biological material. Acta med. scand. Suppl. 396

DETERMINATION OF MERCURY IN BIOLOGICAL MATERIALS. A SPECIFIC AND SENSITIVE DITHIZONE METHOD.

DETERMINATION OF MERCURY IN BIOLOGICAL MATERIALS. A SPECIFIC AND SENSITIVE DITHIZONE METHOD.

Estimation of Mercury in Biological Material by Neutron Activation Analysis.

Neutron activation analysis combined with chemical separation is a quick, accurate method for the estimation of Hg in small samples of biological materials. After nitric-sulfuric acid digeston of the activated sample, a precipitation separation is combined with a gravimetric yield determination. The activity is detected by scintillation counting.

水銀中毒に関する研究 : 2. 正常日本人の尿中血中水銀量について

Amount of mercury in the blood and the urine of elementary school children and University students is reported. The modified ultraviolet absorption method reported by the author was adopted for a microdetermination of mercury in biological materials. One hundred and sixty six children of four elementary schools from age 6 to 12 were chosen as normal subjects according to their parents' occupation. The place of school and parents' occupation with the amount of mercury in the urine are shown in table 1. It is noticeable that the amount of mercury of Minamata children is within normal range. Urinary mercury among six age groups of children is shown in table 2 and no particular difference between them is found. The food consumed by University students, nurses and medical students from age 20 to 24, was observed for seven days in advance of the day of sampling and average consumption is shown in tables 5 and 6. Urinary mercury for a day and blood mercury in 100 ml are presented in tables 3 and 4 and no remarkable difference of them by season and sex is found. The average concentration of mercury in the urine of 166 children was 4.8±0.43μg/L and for 39 University students it was 2.1±0.37μg/L, or 2.0±0.43μg/day. The average concentration of mercury in the blood for 18 University students was 5.3±0.63μg/dl.

水銀中毒に関する研究 : 1. 生物材料中の微量水銀の測定法紫外吸収法の改良法について

A method for the microdetermination of mercury in biological materials is presented. The original method reported by the author was modified at the final step of the measurement. Organic substances in urine, blood and fences were destroyed by adding nitric acid, sulfuric acid and potassium permanganate and by heating at 70°C for a short time, and mercury there in was extracted by a dithizon chloroform solution. Mercury dithizonate evaporated at the bottom of a test tube at 60 to 70°C was destructively heated in a gas chamber, and then mercury vapor being carried by 2l/min air flow was measured in Beckman Kruger mercury vapor meter at 2437 Å extinction of pure ultraviolet light. Electrical potential by mercury Vapor meter was amplyfied and registered by a galvarecorder giving the mercury curve automatically. The area of the curve of a known mercury amount measured by a planimeter was used for the calibration of readings. The method was found to be suitable for assessing 0.02 to 2.0 μg of mercury.

Synthesis of Di-2-Naphthylthiocarbazone — A Simplified Method

Abstract A simple, straightforward laboratory method is given for the preparation of di-2-naphthylthiocarbazone. The method requires no elaborate equipment and can be used for preparing this compound in a refined state, showing a molecular extinction coefficient of approximately 42,000 at wave length of 645 mμ. Since this compound is superior to dithizone when used for the determination of mercury in biological material (particularly urine) and since it is no longer commercially available, its preparation within the laboratory becomes a necessity. The starting compound, 2-naph-thylhydrazine hydrochloride, is readily available.

Microdetermination of mercury in biological material

Microdetermination of mercury in biological material

Microdetermination of mercury in biological material: R. Fabre, R. Truhaut, and C. Boudene, Compt. rend.,246, 2086–2090 (1958)

Microdetermination of mercury in biological material: R. Fabre, R. Truhaut, and C. Boudene, Compt. rend.,246, 2086–2090 (1958)

Mercury in biological materials.

Mercury in biological materials.

Determination of Traces of Mercury in Biological Material by Catalytic Action of Mercuric Ions. Microelectrolysis of Mercury

Determination of Traces of Mercury in Biological Material by Catalytic Action of Mercuric Ions. Microelectrolysis of Mercury

Micro-determination of mercury in biological materials

Download options Please wait... Article information DOI https://doi.org/10.1039/AN9568100294 Article type Paper Download Citation Analyst, 1956,81, 294-298 BibTex EndNote MEDLINE ProCite ReferenceManager RefWorks RIS Permissions Request permissions Micro-determination of mercury in biological materials F. R. Barrett, Analyst, 1956, 81, 294 DOI: 10.1039/AN9568100294 To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page. If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given. If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page. Read more about how to correctly acknowledge RSC content. Social activity Tweet Share Search articles by author F. R. Barrett

Determination of Mercury in Biological Materials

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetermination of Mercury in Biological MaterialsF. L. KozelkaCite this: Anal. Chem. 1947, 19, 7, 494–496Publication Date (Print):July 23, 1947Publication History Published online1 May 2002Published inissue 23 July 1947https://doi.org/10.1021/ac60007a022RIGHTS & PERMISSIONSArticle Views48Altmetric-Citations14LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (356 KB) Get e-Alerts Get e-Alerts

Microdetermination of Mercury in Biological Material

Microdetermination of Mercury in Biological Material