Abstract:
:An analytical method using natural analcime zeolite modified with tppz (2,3,5,6-tetra-pyridylpyrazine) for preconcentration of cadmium, in a column system, and their sequential determination by flame atomic absorption spectrometry (FAAS), was developed. In this work, cadmium was adsorbed onto natural analcime zeolite modified with tppz and then was recovered by nitric acid. Solutions of cadmium were passed through a glass column packed with 100 mg of the sorbent material, at pH 5.0, and cadmium was eluted with 2.0 M HNO(3) at a flow rate of 2.0 ml min(-1). The relative standard deviation (RSD) for eight replicate determinations at the 2.5 μg of cadmium was ±0.94%. The calibration curve using the preconcentration system was linear from 0.01 to 4 μg ml(-1) in final solution with a correlation coefficient of 0.9993. This method was successfully applied for the determination of cadmium in various samples.
journal_name
Toxicol Ind Healthjournal_title
Toxicology and industrial healthauthors
Saljooghi AS,Saljoghi ZSdoi
10.1177/0748233711422730subject
Has Abstractpub_date
2012-10-01 00:00:00pages
771-8issue
9eissn
0748-2337issn
1477-0393pii
0748233711422730journal_volume
28pub_type
杂志文章abstract::This study was realized to investigate the possible beneficial effect of thymoquinone (TQ), the major active component of volatile oil of Nigella sativa seeds, against lead (Pb)-induced inhibition of rat testicular functions. Adult rats were randomized into four groups: a control group receiving no treatment; a Pb gro...
journal_title:Toxicology and industrial health
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journal_title:Toxicology and industrial health
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abstract::Metalworking fluids (MWFs) are complex formulations designed for effective lubricating, cooling, and cleaning tools and parts during machining operations. Adverse health effects such as respiratory symptoms, dermatitis, and cancer have been reported in workers exposed to MWFs. Several constituents of MWFs have been im...
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