نتایج جستجو برای: ultrasound assisted emulsification microextraction silver

تعداد نتایج: 284277  

Journal: :analytical and bioanalytical chemistry research 0
alireza ghiasvand department of chemistry, lorestan university, khoramabad, iran afagh nasirian department of chemistry, lorestan university, khoramabad, iran samira koonani department of chemistry, lorestan university, khoramabad, iran kolsoom nouriasl department of chemistry, lorestan university, khoramabad, iran

since solid-phase and liquid-phase microextraction (spme and lpme) were introduced, as effective solvent-free methods, many efforts have been made to improve their modes and applications. however, due to limitations with sensitivity and efficiency, researchers have focused on improving the performance of their basic primary modes. in this way, in recent years, different methods such as ultrason...

Journal: :Environmental monitoring and assessment 2015
Mohammad Eftekhari Mahmoud Chamsaz Mohammad Hossein Arbab-Zavar Ali Eftekhari

Vortex-assisted surfactant-enhanced emulsification microextraction based on solidification of floating organic drop (VASEME-SFO) was used for preconcentration and speciation of antimony (ΙΙΙ, V) followed by electrothermal atomic absorption spectrometry (ETAAS). In this procedure, Triton X-114 was used as emulsifier and 1-undecanol was used as extraction solvent. This method is based on the comp...

Journal: :international journal of environmental research 2014
h. sereshti s. bakhtiari r. toghyani s. samadi t. besharati-seidani

the ultrasound assisted emulsification microextraction (usaeme) method followed byinductively coupled plasma-atomic emission spectrometry (icp-aes) was used for preconcentration anddetermination of bismuth (bi), indium (in) and lead (pb) in the plant azolla filiculoides lam. calix [4] pyrrole was used as a chelating agent and tetrachloroethylene was selected as extraction solvent. the main para...

Journal: :international journal of environmental research 0
h. sereshti department of chemistry, faculty of science, university of tehran, tehran, iran s. bakhtiari department of chemistry, faculty of science, university of tehran, tehran, iran r. toghyani department of chemistry, faculty of science, university of tehran, tehran, iran s. samadi department of chemistry, faculty of science, university of tehran, tehran, iran t. besharati-seidani department of chemistry, faculty of science, university of guilan, 41335-1914, rasht, iran n.o. mahmoodi department of chemistry, faculty of science, university of guilan, 41335-1914, rasht, iran

the ultrasound assisted emulsification microextraction (usaeme) method followed byinductively coupled plasma-atomic emission spectrometry (icp-aes) was used for preconcentration anddetermination of bismuth (bi), indium (in) and lead (pb) in the plant azolla filiculoides lam. calix [4] pyrrole was used as a chelating agent and tetrachloroethylene was selected as extraction solvent. the main para...

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