A simple and rapid method for simultaneous pre-concentration of eight trace-heavy-metals in water using 1-(2-pyridylazo)-2-naphthol and yttrium for X-ray fluorescence spectrometry

2015 ◽  
Vol 7 (16) ◽  
pp. 6545-6551 ◽  
Author(s):  
Shigeru Taguchi ◽  
Miyabi Asaoka ◽  
Eiko Hirokami ◽  
Noriko Hata ◽  
Hideki Kuramitz ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Simultaneous Determination ◽  
Rapid Method ◽  
Energy Dispersive ◽  
Fluorescence Spectrometry ◽  
X Ray ◽  
Trace Heavy Metals ◽  
Concentration Technique

A simple and rapid pre-concentration technique for the simultaneous determination of eight trace heavy metals in water by energy-dispersive X-ray fluorescence spectrometry.

scholarly journals Simultaneous Determination of Trace Elements in Soils and Sediments by Polarizing Energy Dispersive X-ray Fluorescence Spectrometry

2011 ◽  
Vol 60 (4) ◽  
pp. 315-323 ◽  
Author(s):  
Shin-ichi YAMASAKI ◽  
Hisaya MATSUNAMI ◽  
Akira TAKEDA ◽  
Kazuhiko KIMURA ◽  
Isao YAMAJI ◽  
...  
Keyword(s):  
Trace Elements ◽  
Simultaneous Determination ◽  
Energy Dispersive ◽  
Fluorescence Spectrometry ◽  
X Ray ◽  
Soils And Sediments

Simultaneous Determination of Low Parts-per-Billion Level Pb and as in Waters Using Energy-Dispersive X-Ray Fluorescence Spectrometry

2001 ◽  
Vol 55 (3) ◽  
pp. 298-306 ◽  
Author(s):  
Terrance D. Hettipathirana ◽  
Lester H. Smith ◽  
Keith Norrish
Keyword(s):  
Simultaneous Determination ◽  
Matrix Effects ◽  
Certified Reference Materials ◽  
Ferric Hydroxide ◽  
Standard Addition ◽  
Energy Dispersive ◽  
Fluorescence Spectrometry ◽  
Simple Method ◽  
X Ray

A simple method is described for the simultaneous determination of low parts-per-billion levels of As and Pb in waters. The method is based on the preconcentration of analytes by adsorbing them onto hydrous ferric hydroxide (HFO) impregnated into the 13 mm diameter area at the center of 32 mm diameter circular disks cut from Whatman filter papers. The adsorbed analytes are determined by using thin-layer energy-dispersive X-ray fluorescence spectrometry. The X-ray intensity of As and Pb adsorbed onto HFO is linearly proportional to the concentration up to 80 μg/L. The precision of the method is ∼ 0.5–5%, and the method detection limit for Pb and As in seawater is 0.63 and 0.21 μg/L, respectively. The method was validated by analyzing the certified reference materials SLRS-3 (riverine water), CASS-4 (nearshore seawater), and NASS-5 (offshore seawater) for As. The adsorption characteristics of Pb, As(III), As(V), Se(IV), Se(VI), and Hg onto the HFO impregnated disks, the interspecies adsorption effects, and the use of the standard addition method to compensate for matrix effects are also presented.

DETERMINATION OF MERCURY AND ARSENIC CONTENT IN A FEW INDIAN AYURVEDIC MEDICINES BY MEANS OF ENERGY DISPERSIVE X-RAY FLUORESCENCE (EDXRF)

2009 ◽  
Vol 19 (01n02) ◽  
pp. 77-89
Author(s):  
DAISY JOSEPH ◽  
VARSHA SABLE ◽  
D. C. KOTHARI
Keyword(s):  
Heavy Metals ◽  
Energy Dispersive ◽  
Fluorescence Spectrometry ◽  
Arsenic Content ◽  
X Ray ◽  
Medical Products ◽  
Elemental Concentrations ◽  
Regulatory Bodies

Elemental concentrations in some herbal medical products, produced by different ayurvedic pharmacies in India, were determined using Energy Dispersive X-Ray Fluorescence Spectrometry (EDXRF). All the eight products, which were studied, contained mercury, and four out of the eight products contained arsenic in varied amounts. Daily mercury and arsenic intakes by the patients taking these products, determined from the doses prescribed by the manufacturers, exceeded the recommendations by WHO. The present work does not argue on the toxicity of heavy metals in drugs but gives information about the presence of heavy metals at levels more than the required recommendations by various health regulatory bodies. This level of As and Hg calls for caution as far as their safe intake is concerned.

Determination of parts per billion levels of electrodeposited metals by energy dispersive x-ray fluorescence spectrometry

1977 ◽  
Vol 49 (12) ◽  
pp. 1734-1737 ◽  
Author(s):  
John A. Boslett ◽  
Robert L. R. Towns ◽  
Robert G. Megargle ◽  
Karl H. Pearson ◽  
Thomas C. Furnas
Keyword(s):  
Energy Dispersive ◽  
Fluorescence Spectrometry ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document