| Abstract: | Liquid chromatographic (lc) analysis can detect malachite green residues in water at less than 10 mu-g/l. Water samples were concentrated on disposable diol columns, eluted with 0.05m P-toluene-sulfonic acid in methanol, and determined by reversed-phase lc. When combined with a lead oxide postcolumn reactor, the lc method can simultaneously determine both leuco and chromatic forms of malachite green. Recoveries averaged 95.4% For the chromatic form and 57.3% For the leuco form of malachite green oxalate and leuco malachite green in spiked pond water samples. Recoveries of the carbinol form of malachite green (an equilibrium product of the dye in water) from spiked tap water samples averaged 98.6%. Recoveries of leuco malachite green were low and ph-dependent. |
| Genre: | Article |
| ProdID: | 1003126 |
| Citation Author: | Allen, J. L.; Meinertz, J. R.; Gofus, J. E. |
| Citation Contributing Office: | Upper Midwest Environmental Sciences Center |
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| Citation End Page: | 649 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of AOAC International |
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| Citation Number Of Pages: | 4 |
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| Citation Phsyical Description: | pp. 646-649 |
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| Citation Publisher: | U.S. Fish and Wildlife Service |
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| Citation Search Results Text: | Determination of malachite green and its leuco form in water; 1992; Article; Journal; Journal of AOAC International; Allen, J. L.; Meinertz, J. R.; Gofus, J. E. |
| Citation Start Page: | 646 |
| Citation Volume: | 75 |
| Citation Year: | 1992 |
| Type: | citation/reference |
| Text: | Determination of malachite green and its leuco form in water; 1992; Article; Journal; Journal of AOAC International; Allen, J. L.; Meinertz, J. R.; Gofus, J. E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 1 Jan 1992 00:00 -0600 |
| Publisher: | U.S. Fish and Wildlife Service |
