The Determination of Chromium in Human Urine by Gas Chromatography Using a Flame Photometric Detector With a 425.4 nm Filter

Abstract

The determination of low levels of chromium as chromium (III) trifluororacetylacetonate has been previously achieved by GC using an electron capture detector. Conventional detectors, such as the electron capture detector, are sensitive but not very specific. Replacement of this detector system with a flame photometric detector equipped with a 425.4 nm filter (specific for chromium) affords both the sensitivity and specificity necsesary for monitoring levels of chromium in human urine samples. The detector is linear in the range of 0 to 90 nanograms of chromium. Determination of chromium in human urine using this system has the advantages of greater specificity and linear range, as compared with other GC detector systems. The sensitivity of this system is adequate for monitoring levels of chromium in human urine.