用热中子和超热中子活化分析法测定煤和飞灰中的30种元素。

Determination of 30 elements in coal and fly ash by thermal and epithermal neutron-activation analysis.

作者信息

Rowe J J, Steinnes E

机构信息

Department of the Interior, Geological Survey, Reston, VA 22092, U.S.A.

出版信息

Talanta. 1977 Jul;24(7):433-9. doi: 10.1016/0039-9140(77)80125-2.

DOI:10.1016/0039-9140(77)80125-2

PMID:18962115

Abstract

Thirty elements are determined in coal and fly ash by instrumental neutron-activation analysis using both thermal and epithermal irradiation. Gamma-ray spectra were recorded 7 and 20 days after the irradiations. The procedure is applicable to the routine analysis of coals and fly ash. Epithermal irradiation was found preferable for the determination of Ni, Zn, As, Se, Br, Rb, Sr, Mo, Sb, Cs, Ba, Sm, Tb, Hf, Ta, W, Th and U, whereas thermal irradiation was best for Sc, Cr, Fe, Co, La, Ce, Nd, Eu, Yb and Lu. Results for SRM 1632 (coal) and SRM 1633 (fly ash) agree with those of other investigators.

摘要

采用热中子和超热中子辐照，通过仪器中子活化分析法测定煤和粉煤灰中的30种元素。辐照后7天和20天记录γ射线能谱。该方法适用于煤和粉煤灰的常规分析。发现超热中子辐照更适合于测定镍、锌、砷、硒、溴、铷、锶、钼、锑、铯、钡、钐、铽、铪、钽、钨、钍和铀，而热中子辐照最适合于测定钪、铬、铁、钴、镧、铈、钕、铕、镱和镥。标准参考物质1632（煤）和标准参考物质1633（粉煤灰）的结果与其他研究者的结果一致。