1) purity of reagent
试剂纯度
2) primary standard material purity
基准试剂纯度
1.
The evaluating method in the uncertainty of measurement and its application examples in the primary standard material purity,optical reference filter wavelength standard reference material,Zn-alloy component standard reference material are introduced.
介绍了测量不确定度的评定方法及其在基准试剂纯度、干涉滤光片波长标准物质、锌合金成分标准物质中的应用实例。
3) High-purity reagent
高纯试剂
1.
The new super-clean and high-purity reagent and the common CMOS reagent of acidor alkali were used simultaneously by cleaning experiment before grid oxidation in CMOS technology,the metal content of a piece of cleaned silica was measured by ACP-AES, the appearance pattern of apiece of cleaned silica was measured by AFM, MOS electric capacity was measured too.
通过对新型超净高纯试剂同常规CMOS酸碱试剂同时进行CMOS工艺中栅氧化前的清洗实验,从清洗后硅片残留金属量的电感耦合高频等离子体原子发射光谱分析、硅片表面形貌的AFM分析和MOS电容测量三个方面进行了应用实验。
5) extra pure reagent
超纯试剂
6) hallmark test
纯度试验
1.
The adulteration of sesame oil was analyzed by gas chromatography for the composition of fatty acids and hallmark test of sesame oil.
用气相色谱法和麻油纯度试验法对芝麻油掺伪情况进行分析。
补充资料：纯度测定
一般指采用适当的分析方法求出高纯度物质（如高纯金属、高纯材料、高纯气体等）的纯度而言。测纯度的方法可分为两种：①直接测定法，例如用电解法测定纯金属的纯度，用重量法测定纯物质的纯度等。由于纯度的百分率数值较大，对有效的位数要求也多,因此,测定方法必须是高精度和高准确度的，这样就使高纯物质的纯度测定受到了限制。②间接测定法，它是用高准确度、高灵敏度的方法测定高纯物质中的各种杂质含量，然后从待测物质中减去所测杂质总量的百分率作为该高纯物质的纯度。对高纯物质的纯度测定，目前多采用此方法。测定高纯物质中杂质的方法甚多,较常用的有:紫外-可见分光光度法、原子吸收光谱法、原子发射光谱法、电化学分析法等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条