[Vanadium level in the urine of workers on a shift-work schedule during drilling of oil wells for high-vanadium petroleum].

The study was designed to analyze vanadium content in urine samples of 87 workers engaged in the production of high-vanadium oil and 50 persons of the control group. Statistical data verified an elevated vanadium content in the urine of oil miners and especially of operators of the shop of oil and gas production. Urine concentration of vanadium grew along with the increase in the length of service.