3) hazardous trace elements
有害微量元素
1.
Leaching out of hazardous trace elements from coal-waste rocks of Xinmi-Xinggong mining field,Henan;
河南新密—荥巩矿区煤矸石中有害微量元素的溶出
2.
During coal combustion, some hazardous trace elements volatilize from combustion furnaces into the atmosphere and pollute the environments.
分析了有害微量元素挥发性与燃烧温度、有害微量元素赋存状态之间的关系 ,通过不同温度下煤的燃烧实验及其微量元素挥发性计算 ,得出燃烧过程中有害微量元素的挥发性受燃烧条件的制约 ,温度越高 ,则其挥发性越高 ;微量元素的挥发性与其在煤中的存在状态有密切的关系 。
3.
Based on the analysis and summation of previous publications,modes of occurrence of Ag and other 25 hazardous trace elements in coal were systematically discussed.
基于前人资料的分析总结,系统探讨了煤中Ag等26种有害微量元素的赋存状态。
4) harmful trace elements
有害微量元素
1.
Determination of six harmful trace elements in fructus corni by ICP-OES;
电感耦合等离子发射光谱法测定不同产地的山茱萸中6种有害微量元素的含量
2.
The harmful trace elements in coal not only have an effect on coal preparations and utilizations,but also produce great harm to the ecological environments and human health With the modern analytic and testing methods the content,distribution,occurences migration and concentration of As,F,Hg,Pb and Cd and so on in the upper permian coal seams are presente
煤中有害微量元素不仅影响煤的加工利用，而且对生态环境及人类健康有极大危害。
5) hazardous minor and trace elements
有害微量元素
1.
The enrichrnnt of hazardous minor and trace elements in coal was controled bymany factors and geological processes during different period, and often is the collgruence conapuence of many factors.
文中对煤中有害微量元素富集的成因类型进行了初步探讨，根据煤中有害元素富集的主导因素，划分出5种媒中有害微量元素富集的成因类型：（1）陆源富集型；（2）沉积-生物作用富集型；（3）岩浆-热液作用富集型；（4）深大断裂-热浪作用富集型；（5）地下水作用富集型。
6) Toxic Trace Elements
微量有害元素
1.
Study on Toxic Trace Elements in Coal of Bijie Region
毕节地区煤中微量有害元素的初步分析
补充资料：超痕量分析
分子式：
CAS号：
性质：分析化学中对试样待测物质浓度低于10-6，即<1μg/g时，各种分析方法的测定限。
CAS号：
性质：分析化学中对试样待测物质浓度低于10-6，即<1μg/g时，各种分析方法的测定限。
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