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本文基于在酸性条件下，钒对溴酸钾氧化铬蓝黑Ｂ反应的催化作用，建立了测定痕量钒的催化动力学新体系。以极谱法测定的线性范围为０～１０ｎｇ／１０ｍＬ，检测下限为１．４×１０￣（－１２）ｇ／ｍＬ；以光度法测定的线性范围为０～１０ｎｇ／６ｍＬ，检测下限为１．１１×１０￣（－１１）ｇ／ｍＬ。应用于饮用水及人发中痕量钒的测定，结果满意。
Based on the catalytic effect of vanadium on the blue-black B reaction of potassium bromate and chromic oxide under acidic conditions, a new catalytic kinetic system for the determination of trace vanadium was established. The linear range was 0 ~ 10ng / 10mL and the limit of detection was 1.4 × 10 ~ (-12) g / mL. The linear range was 0 ~ 10ng / 6mL by spectrophotometry and the limit of detection was 1 .11 × 10 ~ (-11) g / mL. It is used in the determination of trace vanadium in drinking water and human hair with satisfactory results.