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Sequential Extraction-Spectrofluorimetric Determination of Mercury Using Cryptand Ethers |
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| Abstract: | Abstract A spectrofluorimetric study of the extraction of mercury with 1,2-dichloroethane as an ion-pair formed between the cryptand 2.2.1-mercury complex and the eosinate counter-ion is described. The detection limit for mercury is 0.7 ng/ml, and the linear working range up to 125 ng/ml of mercury. The relative standard deviation is found to be 2.0% at the 100 ng/ml level. The proposed method has been tested for the determination of mercury in coal. |
| Keywords: | mercury spectrofluorimetry cryptand ethers ion-pair extraction |