%0 Journal Article
%T Determination of dicarboxylic acids in a new compound liquid fertilizer by gas chromatography]<br>气相色谱法测定新型多元复合液肥中二羧酸
%A J Liu
%A L Chen
%A H Zhou
%A <br>刘敬兰
%A 陈连文
%A 周鸿娟
%J 色谱
%D 1999
%I 
%X A method for determination of succinic acid, glutaric acid and adipic acid in a new compound liquid fertilizer by gas chromatography is described. The sample after dried at 80 degrees C was extracted by ethyl alcohol, and then esterified in the presence of BF3. The esterified derivatives were injected into a gas chromatograph with a 5% SE-30 packed column, programmed from 140 degrees C (held for 1 min) to 160 degrees C (held for 6 min) at a rate of 6 degrees C/min. Internal standard was diethyl malonate. Calibration curves of the three diethyl esters were linear in the ranges of 2.3-9.3 micrograms, 10.8-43.2 micrograms and 2.8-11.0 micrograms respectively.
%K NULL<br>复合液肥
%K 二羧酸
%K 测定
%K GC
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=4D81E042D77AFEC6881D14759692069C&aid=D7F5F79B7B81B86243D2C04EB0847F16&yid=B914830F5B1D1078&vid=BCA2697F357F2001&iid=CA4FD0336C81A37A&sid=C36EC077A8A90308&eid=6700D0D256586E73&journal_id=1000-8713&journal_name=色谱&referenced_num=0&reference_num=2