The solid phase coupling of peptide segments catalyzed by the subtilisin-sodium dodecyl sulfate complex

2000 ◽  
Vol 26 (6) ◽  
pp. 369-374 ◽  
Author(s):  
S. V. Kolobanova ◽  
I. Yu. Filippova ◽  
E. N. Lysogorskaya ◽  
I. V. Getun ◽  
A. V. Bacheva ◽  
...  
2006 ◽  
Vol 349 (2) ◽  
pp. 218-228 ◽  
Author(s):  
Yoshiteru Kobayashi ◽  
Naoyuki Kohno ◽  
Shoko Wanibe ◽  
Kazunari Hirayasu ◽  
Hitoshi Uemori ◽  
...  

Langmuir ◽  
1998 ◽  
Vol 14 (16) ◽  
pp. 4350-4358 ◽  
Author(s):  
Fengji Yeh ◽  
Eugene L. Sokolov ◽  
Thomas Walter ◽  
Benjamin Chu

2017 ◽  
Vol 75 (6) ◽  
pp. 1440-1446
Author(s):  
Shahriar Abbasi ◽  
Mehdi ShanbehDehbalai ◽  
Hossein Khani

A new, simple and rapid method for solid phase extraction and preconcentration of trace amounts of cadmium ions using 2-mercaptobenzothiazole/sodium dodecyl sulfate immobilized on magnetite nanoparticles (MBT-SDS-MNPs) was proposed. The method is based on the extraction of cadmium ions via complexation with MBT immobilized on SDS-coated MNPs and their determination by flame atomic absorption spectrometry. The effects of different parameters – pH; eluent type, concentration and volume; amounts of salt and adsorbent; contact time and interfering ions – on the adsorption of cadmium ions were studied. Under optimized conditions, the calibration curve was linear in the range of 10–5,000 μg L−1. Detection limit and relative standard deviation of the proposed method were 0.009 μg L−1 and 2.2%, respectively. The adsorption data were analyzed by Langmuir and Freundlich isotherm models and a maximum adsorption amount of 24.80 mg g−1, a Langmuir adsorption equilibrium constant (b) of 4.62 and Freundlich constants Kf and n of 6.075 mg1–1/n L1/n g−1 and 2.391, respectively, were obtained. Finally, this adsorbent was successfully used for extraction of cadmium from water and food samples.


Sign in / Sign up

Export Citation Format

Share Document