Sensitivity improvement for antimony determination by using in-situ atom trapping in a slotted quartz tube and flame atomic absorption spectrometry
Küçük Resim Yok
Tarih
2012
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Significant improvement has been achieved for antimony determination using a slotted quartz tube (SQT) as an atom trap (AT) for in situ preconcentration and flame atomic absorption spectrometry (FAAS). The suggested technique consists of trapping analyte species during ordinary nebulization followed by releasing the collected analyte via introducing organic solvent. Procedures and analytical figures of merit have been presented for the techniques called FAAS. SQT-FAAS and finally SQT-AT-FMS with the relevant comparisons. Analytical parameters, namely composition of the aqueous medium, sample flow rate, flame conditions, distance between burner head and SQT, sampling period and type of organic solvent and its volume have been optimized. Using SQT-AT-FAAS, a sensitivity enhancement of 369 fold has been obtained, 3 s limit of detection was 3.91 mu g L-1 when 25.0 mL of sample was collected in 4.0 min. Interference effects of some elements on antimony signal were studied. (c) 2012 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Antimony, Flame atomic absorption spectrometry, Slotted quartz tube, Atom trap
Kaynak
Spectrochimica Acta Part B-Atomic Spectroscopy
WoS Q Değeri
Q1
Scopus Q Değeri
Q2
Cilt
77
