Evaluation of chromium exposure based on a simplified method for urinary chromium determination.

Abstract
Urine Cr levels for unexposed and Cr exposed persons were determined by a simplified method which is well suited for routine, large-scale use. A group of welders working on Cr alloyed steel were investigated. For these welders a high degree of correlation was found between concentration of inhaled Cr and Cr concentration in urine immediately after work. At an exposure level of 0.05 mg/m3, measured as Cr, a urinary Cr concentration of approximately 40 .mu.g/l was measured after work. This urinary Cr level is suggested as a guideline indicating the need for a thorough investigation of Cr exposure.

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