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催化光度法测定粮食和豆类作物中的痕量锰

Determination of trace manganese in grain and legume crops by catalytic photometry

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【作者】 章旭坤; 何拥军;

【Author】 Zhang Xukun He Yongjun (Department of Chemistry,Hebei University,Baoding 071002),

【机构】 河北大学化学系; 河北大学化学系 保定071002; 保定071002 邢台市造纸厂;

【摘要】 研究了用锰催化高碘酸钾氧化结晶紫退色和氮川三乙酸作活化剂的新指示反应。方法的选择性高,室温时其 Sandell 灵敏度为2.32×10-5μg/mL Mn,线性范围为63.5~380.7ng/26.2mL Mn。本法已用于粮食和豆类作物中痕量锰的测定,结果令人满意。

【Abstract】 In this article a new indicator reaction is de-veloped on the basis of manganese-catalysed oxi-dation of crystal violet by potassium periodatewith the use of nitrilotriacetic acid as an activa-tor.The method has high selectivity,its Sandellsensitivity is 2.32×10-5 μg/mLMn,and its linearrange is 63.5~380.7 ng/26.2 mLMn at roomtemperature.It has been applied to determinetrace amounts of Mn(Ⅱ)in grain and legumecrops with excellent results.

  • 【文献出处】 化学试剂 ,Chemical Reagents , 编辑部邮箱 ,1992年03期
  • 【被引频次】10
  • 【下载频次】24
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