【摘要】 本文提出以浓硝酸冷浸非全消化法,加OP乳化剂作稳定剂,悬浮液进样法,石墨炉原子吸收测定人发中痕量铬,取得了满意的结果。回收率为93～98%。更多还原

【Abstract】 The Conditions for determining chromium in human hair .by GFAAS.and a new method for digesting human hair have been studied. The conventional complete digestion method may result in the loss of chromium. A new method is proposed to form a suspension by soaking the hair with HNO₃,adding surfactant to stabilize the colloid and then chromium content in the suspension solution is determined. The results are satisfactory. This method is simple and rapid, with recovery of 93～98% and high sensitivity.更多还原