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| Determination of mercury content in copper concentrate by ICP-MS with graphite digestion |
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Received:November 26, 2018
Revised:January 03, 2019
Accepted:January 03, 2019
Published Online:May 27, 2019
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| DOI：doi:10.3969/j.issn.2095-1035.2019.02.006 |
| KeyWord:copper;concentrate, mercury, graphite;digestion, ICP-MS |
| Author | Institution |
| chen ran ran |
Yanggu xiangguang copper co., ltd |
| ma cheng cheng |
Qingdao No.58 Middle School |
| zhang xiao tian |
Yanggu xiangguang copper co., ltd |
| li xian he |
Yanggu xiangguang copper co., ltd |
| Wan Shuang |
YangguXiangguang Copper Co. Ltd. |
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| Abstract: |
| Weigh 0.2g sample in 50mL sample tube,add 5mL nitric acid - hydrochloric acid(volume ratio 1:1)mixing solution as solvent ,pretreatment of samples by graphite digestion. Using 159Tb as internal standard element to compensate the matrix effect, ICP-MS was used to detect 202Hg in copper concentrate. The results showed that the linear correlation coefficient of the calibration curve is more than 0.9999 in the concentration range of 0~50μg/L,the detection limit of method was 0.019μg/L. The test results of standard samples of copper concentrate are in conformity with the standard values. The concentration of mercury in copper concentrate is in the range of 0.5 μg/g~15.8 μg/g, which is basically the same as that of direct mercury analyzer. |
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