%0 Journal Article
%T THE COMPUTER DIFFERENCE TECHNICS IN THE RESEARCH OF MINERAL IR SPECTROSCOPY<br>计算机差谱技术在矿物红外光谱研究中的应用
%A ZHU Wei-tong
%A <br>朱炜炯
%J 地球学报
%D 1991
%I 
%X SDIFF program oi the PE 983 IR spectrophotometer with a 3600 data station was used to obtain the difference of two spectra, and to get a better result than that by the ordinary method. The difference factor can be selected manually or automatically by a step of 0.0002.The character and technique of IR spectral differentiation are introduced by two examples from China. A pure spectrum of alunite has been obtained by the subtraction of chalcedony spectrum from a specimen from Tengchung area, Yunnan Province. By multiple spectrum subtraction, six minerals, kaoli-nite montmorillonite, illite, quartz, albite and a little mierocline were identified in a specimen collected from the hot-spring area in Yangying District, Tibet.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=1DF69A47DE80569EC8F859DF61571180&aid=C6A21C254629030974B247B0609B73B7&yid=116CB34717B0B183&vid=59906B3B2830C2C5&iid=CA4FD0336C81A37A&sid=AC1578C6BB9EBDEF&eid=E0F6F365E4766526&journal_id=1006-3021&journal_name=地球学报&referenced_num=0&reference_num=0