| 除草剂混合标准溶液中标准物质稳定性研究 |
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| 引用本文： | 梁旭锋,王岩,林黎明,孟祥红,李玉翠,陈楠.除草剂混合标准溶液中标准物质稳定性研究[J].山东农业科学,2014(4):106-109. |
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| 作者姓名： | 梁旭锋 王岩 林黎明 孟祥红 李玉翠 陈楠 |
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| 作者单位： | 中国海洋大学;山东出入境检验检疫局检验检疫技术中心;日照检验认证有限公司; |
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| 基金项目： | 山东省科技发展计划(2012GNC11317,农药原药质量安全关键控制技术研究);山东出入境检验检疫局科研计划项目(SK201148,混合标准溶液中标准物质稳定性的研究) |
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| 摘 要： | 选取德国DR公司生产的28种除草剂标准物质,将其配制成混合标准溶液后转移至20 mL带聚四氟乙烯衬盖的棕色螺口样品瓶中,于-18℃避光贮存,采用液相色谱串联质谱法测试各组分量值随贮存时间的变化。结果表明:在90天内,标准物质各组分量值的标准偏差在12~73μg/L范围内,最大相对标准偏差为3.04%(n=5),测量结果的相对不确定度小于5.60%。在置信度为95%时,标准物质各组分量值在(1 000±113)μg/L范围内,测量的偏差不显著。在不超过标准物质的有效期内,稀释混合分装后的标准物质可保存90天。
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| 关 键 词： | 除草剂 混合标准溶液 标准物质 稳定性 |
Study on Stability of Reference Materials in Mixed Standard Herbicide Solution |
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| Liang Xufeng,Wang Yan,Lin Liming,Meng Xianghong,Li Yucui,Chen Nan.Study on Stability of Reference Materials in Mixed Standard Herbicide Solution[J].Shandong Agricultural Sciences,2014(4):106-109. |
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| Authors: | Liang Xufeng Wang Yan Lin Liming Meng Xianghong Li Yucui Chen Nan |
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| Institution: | 1. Ocean University of China, Qingdao 266100, China; 2. Rizhao Certification ＆ Inspection Limited Company, Rizhao 276800, China; 3. Inspection and Quarantine Technical Center, Shandong Entry- Exit Inspection and Quarantine Bureau, Qingdao 266002, China) |
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| Abstract: | A mixed standard solution was obtained with 28 kinds of herbicide reference materials （ DR Company , German） .It was transferred into 20 mL-screw brown sample bottles with PTFE lining cover , and stored away from light at -18℃.Each component value was determined by liquid chromatography -tandem mass spectrometry （ LC-MS/MS） in different storage time .The results showed that the standard deviation of each reference material level was in the range of 12~73μg/L in 90 days.The maximum relative standard de-viation （RSD） was 3.04%（n=5）, and the relative uncertainty of measurement was less than 5.60%.In the 95%confidence interval , the value of each reference material was in the range of （ 1 000 ＆#177;113 ） μg/L with no significant measuring deviation .The diluted mixed packing reference materials could store for 90 days within the valid period . |
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| Keywords: | Herbicide Mixed standard solution Reference material Stability |
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