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采用ＶＡ－９０气态原子化装置与ＷＦＸ－１Ｄ原子吸收分光光度计联用测定饮料中铅，采用ＨＣｌ－ＮａＢＨ４－Ｋ３Ｆｅ（ＣＮ）６体系，经Ｌ９（３４）正交试验选择最佳实验条件为：ＮａＢＨ４２０ｇ／Ｌ，Ｋ３Ｆｅ（ＣＮ）６１００ｇ／Ｌ，ＨＣｌ１．５ｍｌ，氩气流量为０．８Ｌ／ｍｉｎ。在０～１００μｇ／Ｌ范围内，相关系数ｒ＝０．９９９６，回收率为９４．１％～１０７．５％，Ｒ·Ｓ·Ｄ％＝３．３～５．２特征浓度和检出限分别为１．２９μｇ／Ｌ／１％和０．０４９μｇ／Ｌ。干扰试验表明，Ｓｎ、Ｈｇ、Ｃｒ、Ｃｕ、Ｍｎ在５００μｇ／Ｌ以下，Ｚｎ、Ａｓ、Ｆｅ、Ｎｉ、Ａｇ在１０００μｇ／Ｌ以下，不干扰测定
The determination of lead in beverages by VA-90 gas atomization apparatus and WFX-1D atomic absorption spectrophotometer was used to determine the optimum conditions for the determination of lead in the beverage by HCl-NaBH4-K3Fe (CN) 6 system. : NaBH420g / L, K3Fe (CN) 6100g / L, HCl1.5ml, argon flow 0.8L / min. In the range of 0-100 μg / L, the correlation coefficient r = 0.9996, the recoveries were 94.1% -107.5%, and the R · S · D% was 3.3-5.2. Respectively 1.29μg / L / 1% and 0.049μg / L. Interference tests showed that the content of Zn, As, Fe, Ni and Ag was less than 500μg / L for Sn, Hg, Cr, Cu, Mn and did not interfere with the determination