文章信息/Info

Title:

Determination of Microelements in ITO Powders by Inductively Coupled Plasma Optical Emission Spectrometer

作者:

李艷玲; 冀克儉; 鄧衛(wèi)華; 李穎; 毛如增; 周彤

中國兵器工業(yè)集團(tuán)第五三研究所

Author(s):

LI Yanling;  JI Kejian;  DENG Weihua;  LI Ying;  MAO Ruzeng;  ZHOU Tong

CNGC Institute 53

關(guān)鍵詞:

電感耦合等離子體發(fā)射光譜; 氧化銦錫; 微量元素; 堿法熔融; 基體匹配

Keywords:

ICP-OES;  indium tin oxide;  microelement;  molten alkali;  matrix matching

DOI:

10.7502/j.issn.1674-3962.2017.04.11

文獻(xiàn)標(biāo)志碼:

A

摘要:

氧化銦錫（ITO）粉體中的微量雜質(zhì)元素對其薄膜制品的透光率等光譜特性影響較大。用電感耦合等離子體發(fā)射光譜法(ICP-OES)同時(shí)測定ITO粉體中Sn, Fe, Cu, Pb, Zn, Ca, Mg共7種微量元素。樣品置于銀坩堝中用氫氧化鈉鋪底和覆蓋，高溫堿法熔融，用熱水和稀鹽酸浸取并轉(zhuǎn)移至溶液中；選擇合適譜線消除了元素之間的譜線干擾、配制混合標(biāo)準(zhǔn)溶液時(shí)采用基體匹配法消除了基體干擾；對每種元素的精密度、檢出線和加標(biāo)回收率進(jìn)行了研究，試驗(yàn)結(jié)果表明，每種元素的精密度均不大于1.2%，加標(biāo)回收率在98~104%之間，樣品測試結(jié)果與標(biāo)準(zhǔn)值一致。

Abstract:

Microelements in indium tin oxide(ITO) powders have a great impact on spectrum characteristics such as transmittance of film products. Seven microelements in ITO powders were determined by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). ITO powders were placed in a silver crucible with sodium hydroxide bedding and coverage, and melted by alkali at high temperature. The melt was leached and transferred into the solution with hot water and dilute hydrochloric acid. Matrix interference and spectrum interference between elements were eliminated by choosing the right working conditions. The precision, the detection line and the recovery rate of each element were studied, the results show that the precision of ICP-OES was no more than 1.2%, the recovery rate ranged from 98% to 104%. The results of multiple microelements in ITO sample agreed with the recommend value.