Abstract
Mercury as a Heavy metal is important factor must be determined and controlled in environmental air and biological. Mercury (Hg) accumulate in living tissues of human body. By NIOSH method, the briefing work place air of petrochemical worker was measured by cold vapor atomic absorption spectrometry(CV-AAS). For preparation and preconcentration samples before analysis a new method of dispersive liquid-liquid micro-extraction with ammonium salt of 1-pyrrolidinedithiocarbamate(APTC)combined with cold vapor atomic absorption spectroscopy, was developed.The influences of various analytical parameters including pH, APDC concentration and ionic liquid volume were investigated.Quantitative recoveries were obtained at pH 7.The enrichment factor was calculated as 5.The detection of limit(LOD)and detection of quantification(LOQ)of mercury were 0.06 and 0.2 μg L-1 respectively. In order accuracy determination the method,certified reference materials, NIST SRM 3133 Lot 061204 was analyzed and the recovery value 98% obtained. So, method of DLLME-APTC had good potential for preparation and preconcentration mercury samples before analysis.
Highlights
Heavy metal is important factor must be controlled in environmental air and patients
The mercury concentration in human blood and urine samples based on BPDC –IL was determined by FI-CVAAS after ultrasonic liquid-liquid micro-extraction (ULLME) procedure in 50 samples
The determination of mercury in blood/ urine and air was carried out using a flow injection cold vapor atomic absorption spectrometry system after sample treatment according to the ULLME procedure
Summary
Heavy metal is important factor must be controlled in environmental air and patients. High concentration of mercury vapors in work place air can accumulate in human tissues as compared to non- occupationally exposed individuals. Normal mercury concentration in human blood/urine is less than 10-20 μg L-1 [15,16,17,18,19].
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