International Journal of Analytical Chemistry / 2011 / Article / Tab 4 / Research Article
Direct Zinc Determination in Brazilian Sugar Cane Spirit by Solid-Phase Extraction Using Moringa oleifera Husks in a Flow System with Detection by FAAS Table 4 Comparison of methods for determination of zinc.
Sample Sorbent Chelating agent/modifier Eluent PF SV (mL) LOD (μ g L−1 ) Linear range (μ g L−1 ) Detection Ref. Brazilian cachaça — — — — — 6.0 0–4000 FAAS [21 ] Sugar — — — — — 10 25–200 ASV [22 ] Water, hair, urine and saliva Alizarin Red S Alumina HNO3 144 25 0.2 1–100 FAAS [23 ] Seawater Silica gel DPTH Citric acid/tartaric acid — 8.8 1.7 2–500 ICP-OES [24 ] Water Amberlite XAD-2 oVTSC HCl 140 1000 10 20–50 FAAS [25 ] No data XAD-7 8-BSQ HCl 10 — 1.6 5–200 Spectrophoto-metry [26 ] Sea water Dowex 1X8-50 ARS HNO3 5 50–200 23 No data FAAS [27 ] Saline matrices Amberlite XAD-7 ARS HNO3 50 50 29 250–2000 FAAS [28 ] Water SiO2 /Al2 O3 /2 O5 PAN HNO3 52.6 20 2.3 30–180 Spectrophoto-metry [29 ] Brazilian cachaça M. oleifera husks— HNO3 10.9 10 1.9 2–50 FAAS This work
PF = preconcentration factor; SV = sample volume; LOD = limit of detection; PAN = (1-(2-piridylazo)-2-naphtol); DPTH = 1,5-bis(di-2-pyridyl)methylene thiocarbohydrazide; ARS = Alizarin red S; OVTSC = vanillin thiosemicarbazone; 8-BSQ = 8-(benzenesulfonamido)quinoline; FAAS = flame atomic absorption spectrometry; ASV: anodic stripping voltammetry, ICP-OES = inductively coupled plasma optical emission spectrometry.
