Systematic studies on adsorption of 11 trace heavy metals on thiol cotton fiber

Separation and Preconcentration of Gallium(III), Indium(III), and Thallium(III) Using New Hydrazone-modified Resin

“…Several researchers have studied the fundamental extraction behavior [6][7][8][9][10][11][12][13][14] and the mutual extractive separation [15][16][17][18][19][20] of trivalent group 13 metal cations using many kinds of extractants. [21][22][23][24][25][26][27][28] In spite of its versatility, multi-stage extraction procedures, disposal of large volumes of organic wastes and expensive treatment are the main problems.…”

Étude du comportement géochimique du sélénium, sa relation avec le soufre dans le bushveld (Afrique du sud) et développement des techniques analytiques /

“…Although there are variation in TCF [13][14][15][16][17][18][19][20][21][22], the method used in this study is similar to Marin et al [21]: 10 g of commercial cotton, 53 ml of thioglycollic acid (mercaptoacetic acid), 35 ml of acetic anhydride, 16.5 ml of acetic acid and 0.15 ml of sulfuric acid (H2SO4) (all ACS grade) were mixed in an Erlenmeyer flask and placed in a water bath (40 °C) for 4-5 days. The mixture was stirred every day.…”

“…The thiol cotton fiber (TCF) originally developed by Nishi et al [13] for preconcentration of mercury is known today for its affinity with 19 elements [14,15], TCF is a strong smelling white powder, notably able to collected Se IV from HC1 [14,16]. TCF preparation is easy, relatively stable, well known, inexpensive and has been used in some previous works [13][14][15][16][17][18][19][20][21][22]. Elements collected on TCF have been analyzed after destruction of TCF with varied instrument such as graphitefurnace atomic absorption (GFAA), ICP-MS and ICP-AES.…”

Determination of Urea in Serum Based on the Combination of an Enzymatic Reaction with Immobilized Urease and Ion Chromatographic Analysis

“…[1][2][3][4][5] However, few studies have addressed the conversion of cedar sawdust possessing a higher-order structure into chemical materials. [6][7][8] Cedar sawdust is a biopolymer that possesses a carbon framework microstructure.…”