Determination of sulfur and heavy metals in crude oil and petroleum products by energy-dispersive x-ray fluorescence spectrometry and fundamental parameter approach

1981 ◽  
Vol 53 (12) ◽  
pp. 1788-1792 ◽  
Author(s):  
Leif Hoejslet. Christensen ◽  
Allan. Agerbo
2015 ◽  
Vol 7 (16) ◽  
pp. 6545-6551 ◽  
Author(s):  
Shigeru Taguchi ◽  
Miyabi Asaoka ◽  
Eiko Hirokami ◽  
Noriko Hata ◽  
Hideki Kuramitz ◽  
...  

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.


2009 ◽  
Vol 19 (01n02) ◽  
pp. 77-89
Author(s):  
DAISY JOSEPH ◽  
VARSHA SABLE ◽  
D. C. KOTHARI

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.


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

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