Standard No.:	GB/T 17863-2008
English Name:	Determination of thorium in thorium ores
Chinese Name:	钍矿石中钍的测定
Chinese Classification:	F46    Nuclear material, nuclear fuel and their analytical test method
Professional Classification:	GB    National Standard
ICS Classification:	27.120.30 27.120.30    Fissile materials and nuclear fuel technology 27.120.30
Source Content Issued by:	AQSIQ; SAC
Issued on:	2008-7-2
Implemented on:	2009-4-1
Status:	valid
Superseding:	GB/T 17863-1999 Determination of thorium in thorium ores N263 separation EDTA titration method
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	160.0
Delivery:	via email in 1~3 business day

本标准代替GB/T 17863-1999《钍矿石中钍的测定　N263分离EDTA 滴定法》。本标准规定了钍矿石中钍的N263分离EDTA滴定法和N263分离偶氮胂Ⅲ分光光度法的测定原理、步骤、试剂和仪器、结果计算和方法的精密度。本标准与GB/T 17863-1999相比主要变化如下：
———在N263分离EDTA滴定法主要技术内容不变的情况下，将N263分离EDTA滴定法的测定范围由0.02%～n％（1＜n＜10）改为0.1%～10%，并对文字表述及结果计算进行了修改。
———对钍含量在0.02%～0.2%的样品，增加了N263萃取色层分离偶氮胂Ⅲ分光光度法。