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能力验证中总硬度标准品均匀性及稳定性分析
引用本文:王舒婷,田渭花,蔺凯,周弛,窦蓓蕾,杏艳.能力验证中总硬度标准品均匀性及稳定性分析[J].环境监控与预警,2016,8(5):42-44.
作者姓名:王舒婷  田渭花  蔺凯  周弛  窦蓓蕾  杏艳
作者单位:1. 陕西省环境监测中心站,陕西 西安,710054;2. 西安市水环境监测中心,陕西 西安,710100
摘    要:研究用氯化钙和硫酸镁配制总硬度标准品的均匀性和稳定性,根据《能力验证样品均匀性和稳定性评价指南》(CNAS-GL03:2006),随机抽取样品进行检验。结果表明,4种浓度的样品在p H值2,室温25℃时,样品内和样品间均无显著性差异,样品均匀性合格,在一年内稳定性较好。

关 键 词:总硬度  标准样品  均匀性  稳定性
收稿时间:2016/2/14 0:00:00
修稿时间:2016/3/11 0:00:00

Research of Homogeneity and Stability of Total Hardness Samples Used for Proficiency Testing
WANG Shu ting,TIAN Wei hu,LIN Kai,ZHOU Chi,DOU Bei lei,XING Yan.Research of Homogeneity and Stability of Total Hardness Samples Used for Proficiency Testing[J].Environmental Monitoring and Forewarning,2016,8(5):42-44.
Authors:WANG Shu ting  TIAN Wei hu  LIN Kai  ZHOU Chi  DOU Bei lei  XING Yan
Abstract:The homogeneity and stability of the standard samples which contain calcium chloride and magnesium sulfate for total hardness were investigated .Randomly selected samples were tested for homogeneity and stability according to the “Guidance on E-valuating the Homogeneity and Stability of Samples Used for Proficiency Testing” (CNAS-GL03:2006).The results showed that four different concentrations of samples were stable and homogeneous in room temperature 25℃, pH<2 within a year , without sig-nificant difference in between the samples .
Keywords:Total hardness  Standard sample  Homogeneity  Stability
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