【摘要】 本文研究了邻苯二酚紫光度法测定食品中微量锡,选择了最佳工作条件,拟出新的分析方法。实验结果表明:本方法简便、快速、准确、工作曲线线性关系好,相关系数γ为0.999,灵敏度ε为7.4×10~4,可以满足食品分析要求。更多还原

【Abstract】 This is researching the spectrophotometric determination of micro amount tin in food with pyrocatechol violet. The optimum working conditions are selected and the new procedure of analysis is proposed. The analytical results show that this method is handy,fast and accurate. The linear relation of working curve is improved. The interrelated coefficient (r)is O.999; the sensitivity(ε) is 7.4×lO~4 1/mol·cm. This method can fulfil the analytical requirements for food.更多还原