当前位置： SCI文献检索 > FOOD CHEMISTRY期刊下所有文献 > Accurate and sensitive determination of lead in black tea samples using cobalt magnetic particles based dispersive solid-phase microextraction prior to slotted quartz tube-flame atomic absorption spectrometry.

Accurate and sensitive determination of lead in black tea samples using cobalt magnetic particles based dispersive solid-phase microextraction prior to slotted quartz tube-flame atomic absorption spectrometry.

Abstract：

:Newly developed combination of magnetic cobalt particles based dispersive solid-phase microextraction (Co-MP-DSPME) and slotted quartz tube attached flame atomic absorption spectrometry (SQT-FAAS) was utilized to determine lead at trace levels in tea samples. Co-MPs' adsorbent properties were tested and validated for their selectiveness to lead. Only with a few and short extraction steps (i.e. adding MPs, mixing, decanting and eluting) analyte was extracted from sample solution rapidly and efficiently. Limit of detection (LOD) and limit of quantification (LOQ) for the developed method (Co-MP-DSPME-SQT-FAAS) were found to be 7.77 µg/L and 25.9 µg/L, respectively. Matrix matching strategy was performed and outcomes indicated that the developed method is applicable with the high percent recovery values of 110.1 ± 4.5 and %102.9 ± 4.2 for 100 and 300 µg/kg lead standard spiked black tea samples, respectively. The method was also applied to standard reference material to check the accuracy of the method.

journal_name

Food Chem

journal_title

Food chemistry

authors

Akkaya E,Erulas FA,Büyükpinar Ç,Bakirdere S

doi

10.1016/j.foodchem.2019.06.014

subject

Has Abstract

pub_date

2019-11-01 00:00:00

pages

124947

eissn

0308-8146

issn

1873-7072

pii

S0308-8146(19)31049-0

journal_volume

297

pub_type

杂志文章

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