91热视频在线播放,av在线人妻,97超碰免费看,久久99日一本,精品日本一区,久草免费黄色电影,人人精品综合网,午夜日韩有码中文字幕,久久久久久五月

 
 
             
       

  Site: Index >> Technology >> Chemical Thesis >> Thesis Detail

Thesis Name: Study on the retention behavior of sulfur compound
Usage: Study on the retention behavior of sulfur compound
Keyword: 123
Remarks: Based on the reversed phase ion-pair chromatography, the retention behaviour of thiourea, polysulfide, ammonium sulfide and ammonium thiocyanate were discussed under different conditions such as ion pair reagent and its concentration, ion intensity and organic reagent. It was testified that the concentration of ion pair reagent, pH and the volume ratio of tetramethylene-oxide in mobile phase played important roles in the retention behavior of ammonium sulfide and ammonium thiocyanate. The best analytical results were obtained by using a C18 column with a mobile phase comprising a 20:79:1 (% v/v) mixture of methanol-water-tetramethylene-oxide, pH 6.64, containing 3.0 mmolL-1 ammonium tetrabutyl bromide and 6 mmolL-1 KH2PO4-K2HPO4 buffer. Column temperature and detection wave were controlled at 25ºC and 220nm, respectively. Linearity of the working curve was investigated with correlation coefficients of 0.9989-0.9999, and the relative standard deviation was below 4.9%. The proposed method had been successfully used in the samples determination.
Original file: No File

Promulgator Detail
Full name: hichem
Country: CN
City:  
Company Name: hichem
Homepage: http://www.teloon.com
E-mail: reply
Phone: 86-411-82819585
Fax: 86-411-82819612
Company Address: Renming Road, Dalian city, Lianning pro,china
Zip/Postal Code:  
Introduction:  
 

Home | About Us | Contact Us | Disclaimer | Site map
Copyright all reserved by Teloon Chem Corporation 2003-2026
遼ICP備:遼B-2-4-20080120-9
县级市| 景泰县| 栖霞市| 兴和县| 乐清市| 建湖县| 洛南县| 福泉市| 云和县| 师宗县| 灵丘县| 卢氏县| 八宿县| 枞阳县| 石渠县| 吉木乃县| 隆子县| 邯郸县| 公主岭市| 韶关市| 水城县| 秦安县| 伊吾县| 页游| 宣恩县| 周口市| 惠东县| 罗山县| 太谷县| 册亨县| 安丘市| 乾安县| SHOW| 马关县| 永城市| 巫山县| 砀山县| 托克逊县| 昆明市| 清徐县| 凭祥市|