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KMID : 0895419910010020136
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Journal of Korean Society of Occupational and Enviromental Hygiene
1991 Volume.1 No. 2 p.136 ~ p.143
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Determination of Inorganic Mercury in Urine and Airborne by Cold Vapor Atomic Absorption Spectrophotometry
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Abstract
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Inorganic mercury in urine and airborne was determined by cold vapor atomic absorption spectrophotometry.
Detailed sampling methods and analytical results are as follows :
1. 100∼200㎖ of urine for each person was taken in 250㎖ borosilicate bottle and K₂S₂O_8 (0.1g/100㎖ urine) was added to prevent bacterial contamination. About 1001 air of workingplace was absorbed in l0㎖ of absorbing solution. Urine samples and absorbing solution tubes were stored at 4℃. Dillution solution to prepare standard solution used deionized water (D.W) for urine and absorbing solution (A.S) for air.
2. In this procedure detection limit was l ng/㎖ and mercury contents of blank reagent solution was 1∼2 ng/㎖.
3. Calibration range was 0.02∼0.1 ㎍/㎖ and in this range r.s.d for each calibration curve in D.W and A.S and ±7.9% and ±3.7%, respectively.
4. Repeatability (n=5 times, conc. 0.05 ㎍/㎖) was ±5.8%, in D.W. and ±4.4% in A.S, respectively.
5. Recovery for urine adding spiked concentration (0.05 ㎍/㎖) was about 90%.
6. Analytical result of samples was 1∼139 ㎕/1 in urine and ∼0.127 ㎎/㎥ in airborne.
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