Synthesis of Cross-Linked Chitosan and Application to Adsorption and Speciation of Se (VI) and Se (IV) in Environmental Water Samples by Inductively Coupled Plasma Optical Emission Spectrometry

International Journal of Molecular Sciences

Jun Dai¹  Feng Lian Ren¹  Chun Yuan Tao² 

[1] College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China; E-Mail:;College of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang, Jiangxi 332005, China; E-Mails:

关键词: cross-linked chitosan;    speciation;    inductively coupled plasma optical emission spectrometry;    selenium;   

DOI  :  10.3390/ijms12064009

来源: mdpi

【 摘 要 】

A new type of cross-linked chitosan was synthesized with Diethylene Triamine (DCCTS). The adsorption of Se (VI) on DCCTS was studied. The effect factors on adsorption and the adsorption mechanism were considered. The results indicated that the DCCTS could concentrate and separate Se (IV) at pH = 3.6; the maximum adsorption efficiency was 94%, the adsorption equilibrium time was 30 min; the maximum adsorption capacity was 42.7 mg/g; the adsorption fitted Langmuir equation. A novel method for speciation of Se (VI) and Se (IV) in environmental water samples has been developed using DCCTS as adsorbent and ICP–OES as determination means. The detection limit of this method was 12 ng/L, the relatively standard deviation was 4.5% and the recovery was 99%~104%.

【 授权许可】

CC BY   
© 2011 by the authors; licensee Molecular Diversity Preservation International, Basel, Switzerland.