在 8 0～ 130℃的低温下用浓硝酸及过氧化氢消化人发 ,直到溶液呈透明淡棕色 ,加乳化剂OP溶解消化过程中所产生的油脂 ,可获得一均匀的样品乳浊液。取适量乳浊液 ,加入适量琼脂溶液及释放剂La(Ⅲ )溶液配制成试液。对样品处理条件、干扰的消除及检出限进行了考察。本方法的测定结果与灰化法一致 ,相对误差小于± 0 5 %。方法简便、快速、准确。 At 80 ~ 130 ℃ low temperature with concentrated nitric acid and hydrogen peroxide to digest human hair, until the solution was transparent light brown, plus emulsifier OP digestion and digestion of oil produced during the process can be a uniform sample emulsion. Take the right amount of emulsion, add appropriate amount of agar solution and release agent La (Ⅲ) solution to prepare a test solution. The sample processing conditions, elimination of interference and detection limits were investigated. The determination of this method is consistent with the ashing method, the relative error is less than ± 0 5%. The method is simple, fast and accurate.