Total mercury determination in different tissues of broiler chicken by using cloud point extraction and cold vapor atomic absorption spectrometry

Shah, Abdul Qadir; Kazi, Tasneem Gul; Baig, Jameel Ahmed; Afridi, Hassan Imran; Kandhro, Ghulam Abbas; Arain, Mohammad Balal; Kolachi, Nida Fatima; Wadhwa, Sham Kumar

doi:10.1016/j.fct.2009.09.016

Cited by 61 publications

(25 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sensitivity of the method has been compared with some of the reported micellar mediated cloud point extraction procedures (Table 4). [42][43][44][45] The proposed method can serve as an alternative to the existing methods. …”

Section: Resultsmentioning

confidence: 99%

Micellar mediated trace level mercury quantification through the rhodamine B hydrazide spirolactam ring opening process

Malingappa

Kumar

2011

Anal. Methods

View full text Add to dashboard Cite

The micellar mediated trace level estimation of mercury in industrial effluent sample by the rhodamine B hydrazide spirolactam ring opening process is described. The catalytic reaction of mercuric ion with colorless rhodamine B hydrazide to form pink colored rhodamine B through amide bond cleavage at pH 5 forms the basis of this reaction. The dye obtained was extracted from the aqueous phase into nonionic surfactant using Triton X-114 through cloud point formation and its absorbance was measured at 556 nm. The reaction conditions such as concentrations of rhodamine B hydrazide and Triton X-114, effect of NaCl concentration on cloud point temperature and the efficiency of extraction were optimized. The selectivity of the method towards mercury in the presence of various ions was studied. The validity of the method was examined by spiking real samples with known amounts of mercury and carrying out recovery studies. The results obtained by the proposed method were compared with the standard dithiazone method. The preconcentration and enrichment factors were found to be 5 and 12 respectively. The limit of detection and the linear range were found to be 1.4 ng ml À1 and 10-100 ng ml À1respectively. The relative standard deviation was found to be 0.35% at 20 ng ml À1.

show abstract

Section: Resultsmentioning

confidence: 99%

Micellar mediated trace level mercury quantification through the rhodamine B hydrazide spirolactam ring opening process

Malingappa

Kumar

2011

Anal. Methods

View full text Add to dashboard Cite

show abstract

“…These features are crucial, when the concentration of mercury in the sample is low and the matrix is complex. Advantages of CV AAS resulted in its frequent use for the determination of mercury in biological samples (Shah et al 2010; Torres et al 2009), hair (Bruhn et al 1994), slurries (Torres et al 2009), water (Krata et al 2002), and food packaging (Perring et al 2001). Cold vapor generation was also combined with atomic fluorescence spectrometry (CV AFS) (da Silva et al 2010; Li and Wang 2007) or inductively coupled plasma mass spectrometry (ICP MS) (Kenduzler et al 2012; Knight et al 1999).…”

Section: Introductionmentioning

confidence: 99%

On the use of certified reference materials for assuring the quality of results for the determination of mercury in environmental samples

Bulska

Krata

Kałabun

et al. 2016

Environ Sci Pollut Res

View full text Add to dashboard Cite

This work focused on the development and validation of methodologies for the accurate determination of mercury in environmental samples and its further application for the preparation and certification of new reference materials (RMs). Two certified RMs ERM-CC580 (inorganic matrix) and ERM-CE464 (organic matrix) were used for the evaluation of digestion conditions assuring the quantitative recovery of mercury. These conditions were then used for the digestion of new candidates for the environmental RMs: bottom sediment (M_2 BotSed), herring tissue (M_3 HerTis), cormorant tissue (M_4 CormTis), and codfish muscle (M_5 CodTis). Cold vapor atomic absorption spectrometry (CV AAS) and inductively coupled plasma mass spectrometry (ICP MS) were used for the measurement of mercury concentration in all RMs. In order to validate and assure the accuracy of results, isotope dilution mass spectrometry (IDMS) was applied as a primary method of measurement, assuring the traceability of obtained values to the SI units: the mole, the kilogram, and the second. Results obtained by IDMS using n(200Hg)/n(202Hg) ratio, with estimated combined uncertainty, were as follows: (916 ± 41)/[4.5 %] ng g−1 (M_2 BotSed), (236 ± 14)/[5.9 %] ng g−1 (M_3 HerTis), (2252 ± 54)/[2.4 %] ng g−1 (M_4 CormTis), and (303 ± 15)/[4.9 %] ng g−1 (M_CodTis), respectively. Different types of detection techniques and quantification (external calibration, standard addition, isotope dilution) were applied in order to improve the quality of the analytical results. The good agreement (within less than 2.5 %) between obtained results and those derived from the Inter-laboratory Comparison, executed by the Institute of Nuclear Chemistry and Technology (Warsaw, Poland) on the same sample matrices, further validated the analytical procedures developed in this study, as well as the concentration of mercury in all four new RMs. Although the developed protocol enabling the metrological certification of the reference value was exemplified by the determination of mercury in environmental samples, it could be considered as valid for any certification procedure required whenever new certified RMs are introduced.

show abstract

“…When the enhancement factors of 128 and 157 at both wavelengths are considered, it is clear that they are also better than those of more sensitive analytical methods such as spectrofluorimetry (Bozkurt, Ocakoglu, and Merdivan 2012) and HPLC-ICP-MS after CPE (Chen et al 2009). Also, the coupling of CPE with UV-Vis spectrophotometry gave a simple, fast, and low-cost procedure with a comparable and acceptable precision for determination of total mercury without requiring laborious, time-consuming, and complex instruments such as CV-AAS (Shah et al 2010), cold vapour-inductive coupled plasma-optical emission spectrometry (CV-ICP-OES) after CPE (Depoi, Bentlin, and Pozebon 2010), ET-AAS (Aranda et al 2008), and even online FIA-spectrophotometry (Garrido et al 2004). It is important to emphasize that 1.0 mL of THF volume containing surfactant-rich phase was sufficient to obtain preconcentration factors of 46 and 56 at both wavelengths, and the whole preconcentration procedure was done just in a 50 mL centrifuge tube within 20 min.…”

Section: ããããmentioning

confidence: 99%

A fast and reliable method for quantitative determination of total mercury in vegetables

Gürkan

Kır

2013

Toxicological & Environmental Chemistry

View full text Add to dashboard Cite

A cloud-point extraction (CPE) process using the nonionic surfactant, polyethylene glycol tert octylphenyl ether (Triton X-114) was employed for determination of Hg(II) ions in aqueous solutions. The method is based on the ion-pairing reaction of Hg(II) with Pyronin B (PyrB þ ) in the presence of excess iodide at pH 6.0 and extraction of the complex formed. The chemical variables affecting CPE efficiency were studied, and the analytical characteristics of the method were obtained. The calibration curves were linear in the range of 1-40 mg L À1 with the detection limits of 0.35 and 0.30 mg L À1 at 556 and 521 nm. Selectivity was also tested. The coefficients of variation of the method are 2.4% and 5.2% for five replicate measurements of mercury at levels of 10 and 25 mg L À1 , respectively. The results obtained for two certified reference samples were in a good agreement with the certified values. The method was applied to the determination of total mercury in vegetable samples.

show abstract

Total mercury determination in different tissues of broiler chicken by using cloud point extraction and cold vapor atomic absorption spectrometry

Cited by 61 publications

References 25 publications

Micellar mediated trace level mercury quantification through the rhodamine B hydrazide spirolactam ring opening process

Micellar mediated trace level mercury quantification through the rhodamine B hydrazide spirolactam ring opening process

On the use of certified reference materials for assuring the quality of results for the determination of mercury in environmental samples

A fast and reliable method for quantitative determination of total mercury in vegetables

Contact Info

Product

Resources

About