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- E-ISSN 2093-8950
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Determination of Mercury in Fly Ash by Using Flow Injection Cold Vapor Isotope Dilution Inductively Coupled Plasma Mass Spectrometry
Mass Spectrometry Letters / Mass Spectrometry Letters, (P)2233-4203; (E)2093-8950
2012, v.3 no.2, pp.58-61
https://doi.org/10.5478/MSL.2012.3.2.58
(Korea Research Institute of Standards and Science)
(Korea Research Institute of Standards and Science)
(Kyungpook National University)
(Kyungpook National University)
(Korea Research Institute of Standards and Science)
(Kyungpook National University)
(Kyungpook National University)
Suh,
J. K., Min,
H. S., Kamruzzaman,
M., &
Lee,
S.
H.
(2012). Determination of Mercury in Fly Ash by Using Flow Injection Cold Vapor Isotope Dilution Inductively Coupled Plasma Mass Spectrometry. Mass Spectrometry Letters, 3(2), 58-61, https://doi.org/10.5478/MSL.2012.3.2.58
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Abstract
A method based on flow injection-isotope dilution-cold vapor-inductively coupled plasma mass spectrometry (FI-IDCV-ICP/MS) has been applied to determine trace level of mercury in fly ash. 200Hg isotopic spike was added to 0.25 g of BCR176Rfly ash and then decomposed by microwave digestion procedure with acid mixture A (8 mL HNO3 + 2 mLHCl + 2 mL HF) and acid mixture B (8 mL HNO3 + 2 mL HClO4 + 2 mL HF) for applying IDMS. Mercury cold vapor was generatedby using reductant solution of 0.2% (w/w) NaBH4 and 0.05% (w/w) NaOH. The measurements of n(200Hg)/n(202Hg) isotoperatio was made using a quadrupole ICP/MS system. The accuracy in this method was verified by the analysis of certified referencematerial (CRM) of fly ash (BCR 176R). The indicative value of Hg in BCR 176R fly ash was 1.60 ± 0.23 mg/kg (k = 2). The determinedvalues of Hg in BCR 176R fly ash by the method of FI-CV-ID-ICP/MS described in this paper were 1.60 ± 0.24 mg/kg(k = 3.18) and the analysis results were in well agreement with the indicative value within the range of uncertainty.
- keywords
- Mercury, Flow injection, Cold-vapor, Isotope dilution-inductively coupled plasma mass spectrometry, BCR CRM 176R, Fly ash
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- Submission Date
- 2012-02-17
- Revised Date
- 2012-06-18
- Accepted Date
- 2012-06-18
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