Due to only the acidity of gastric juice was considered for the determination of soluble elements in toys and pencils by the standard method, the simulant conditions for the determination of soluble elements As, Ba, Cd, Cr, Hg, Pb, Sb, Se were studied, which included not only the aciditiy of gastric juice but also the influence of saliva.
国内外标准中关于玩具、铅笔中可溶性有害元素砷、钡、镉、铬、汞、铅、锑、硒的测定只考虑了胃液酸度的影响这一不足,在充分考虑唾液、胃液两种介质的影响下,建立了新的模拟溶出条件,将改进后的方法用于检测玩具、铅笔中8种有害元素,测定结果更切合实际。
Simultaneous determination of eight hazard elements was studied in toys and pencils with microwave digestion and ICP-AES.
对微波消解-等离子发射光谱测定玩具、铅笔中As、Ba、Cd、Cr、Hg、Pb、Sb、Se八种有害元素的方法进行了系统研究,针对不同样品确定了不同的酸消解体系,并对微波消化条件和等离子体发射光谱的测定条件进行了优化选择。
Speciation methods of As,Sb,Se in toys and pencils were investigated,and measuring conditions were optimized.
对玩具、铅笔中可溶性砷、锑、硒的形态分析方法进行了研究,对原子荧光光谱法测定不同价态砷、锑、硒的方法进行了优化,建立了砷、锑、硒的原子荧光光谱形态分析方法。
Physical change of pencil boards treated with vapor.;
蒸汽处理铅笔板材的物性变化
In order to overcome the shortcoming of high temperature baking board, during the study on pencil board improvement,the following expetiments are conducted:1.
为克服高温烤板处理的缺点 ,进行了椴木铅笔板热压干燥基本规律及温度、时间与含水率的关系研究和热压干燥的铅笔板与烤板的吸湿性、脆性对比试验。
: A method for constructing second microdisk electrode with lead has been reported.
本文用铅笔芯作为电极材料制成了供常规分析用的亚微盘电极,该电极制备简单、经济,在差分脉冲伏安法测定废水中的铜时,重现性好,几乎不存在残留效应,结果令人满意。
We present a pencil texture generation method based on the pencil filter.
提出了一种基于卷积算子的铅笔滤镜生成算法,通过分析真实铅笔纹理的结构特征,抽象出铅笔笔画的简单数学模型。