| 氯丙嗪用于面粉中过氧化苯甲酰的快速测定 |
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| 引用本文： | 周立梅,王瑜,孙觅.氯丙嗪用于面粉中过氧化苯甲酰的快速测定[J].化学研究与应用,2012,24(5):829-832. |
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| 作者姓名： | 周立梅 王瑜 孙觅 |
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| 作者单位： | 1. 沧州师范学院化学与环境科学系,河北沧州,061001
2. 河北师范大学汇华学院化学系,河北石家庄,050091 |
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| 摘 要： | 在磷酸介质中,以盐酸氯丙嗪为光谱探针,分光光度法测定面粉中过氧化苯甲酰(BPO)。结果表明:室温下氯丙嗪-BPO体系在530nm波长处有最大吸收,表观摩尔吸光系数ε530=1.6×104L.mol-1.cm-1,BPO含量在1.0×10-4～4.0×10-3mg.mL-1范围内符合Beer定律。检出限为5.0×10-5mg.mL-1,加标回收率为96.5%～101%,RSD为1.8%～3.2%,该法简便易行,适用于测定面粉中微量BPO。
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| 关 键 词： | 分光光度法 过氧化苯甲酰 盐酸氯丙嗪 |
Chlorpromazine as a new analytical agent rapid microdetection of benzoyl peroxide in wheat flour |
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| ZHOU Li-mei
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WANG Yu
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SUN Mi.Chlorpromazine as a new analytical agent rapid microdetection of benzoyl peroxide in wheat flour[J].Chemical Research and Application,2012,24(5):829-832. |
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| Authors: | ZHOU Li-mei WANG Yu SUN Mi |
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| Institution: | 1.Department of Chemistry and Environment Science,CangzhouTeachers’College,Cangzhou 061001,China; 2.Department of Chemistry,HuihuaCollege of Hebei Teachers’University,Shijiazhuang 050091,China) |
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| Abstract: | A new oxidation system in phosphoric acid solution,with chlorpromazine(CPH)as the spectral probe was proposed for determination of benzoyl peroxide(BPO)in flour.Results indicated that this CPH-BPO had an absorption maximum at 530nm and the apparent molar absorption coefficient was 1.6×104L·mol-1·cm-1,Beer′s law was obeyed within the concentration of 1.0×10-4 to 4.0×10-3 mg·mL-1.The BPO detection limit by this method was 5.0×10-5mg·mL-1.The spike recoveries were between 96.5%~101%,and the RSD were between 1.8%~3.2%.Due to its easy operation and high recovery,this method could be applied directly to analyze trace benzoyl peroxide in flour. |
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| Keywords: | spectrophotometry benzoyl peroxide chlorpromazine |
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