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您现在的位置:足球竞猜软件 >> 技术文章 >> 环境标准物质的作用及应用
环境标准物质的作用及应用
浏览次数:305发布日期:2019-08-16

【LAIYUAN/ZUOZHE】BEINACHUANGLIAN 

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        环境标准物质足球竞猜软件又称环境标准参照物质。在组成与性质上与被测的环境物质相似的参照物质。由于目前所用的仪器分析方法仅是一种相对的测定法,要用标准参照物质对仪器分析加以校正,以排除在被测成分的量与测定信号之间所引起的干拢和影响,从而获得较准确的测定值。

        环境标准物质只是标准物质中的一类。20世纪80年代,标准物质的发展已进入了在全世界范围内普遍推广使用的阶段。环境标准物质不仅成为环境检测中传递准确度的基准物质,而且也是实验室分析质量控制的物质基础。在世界范围内,已有近千种环境标准物质。其中,中国使用量较大的代表性标准物质有果树叶、小牛肝和标准气体;日本的胡椒树叶、底泥和人头发标准物质;中国的、气、土、生物和水系沉积物以及大米粉标准物质等。

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