Solid phase extraction vis-à-vis coprecipitation preconcentration of cadmium and lead from soils onto 5,7-dibromoquinoline-8-ol embedded benzophenone and determination by FAAS.

This article compares the solid phase extraction (SPE) and coprecipitative preconcentration of cadmium and lead from dilute aqueous solutions as a function of pH and weight of chelating agent. SPE enriches cadmium and lead over a wider pH range (6.0-8.

RETRACTED: Preconcentration and solid-phase extraction of beryllium, lead, nickel, and bismuth from various water samples using 2-propylpiperidine-1-carbodithioate with flame atomic absorption spectrometry (FAAS).

This article has been retracted at the request of the Editors-in-Chief. Please see Elsevier Policy on Article Withdrawal (http://www.elsevier.

RETRACTED: Simultaneous flow-through determination of nitrites, nitrates and their mixtures in environmental and biological samples using spectrophotometry.

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Preconcentrative separation of chromium(VI) species from chromium(III) by coprecipitation of its ethyl xanthate complex onto naphthalene.

A rapid, sensitive and selective method is described for the determination of chromium(VI) in presence of 100-fold amounts of chromium(III) by flame atomic absorption spectrometry (FAAS) in conjunction with coprecipitative preconcentration of its ethyl xanthate complex onto naphthalene. The solid mixture consisting of the chromium(VI) complex together with naphthalene is dissolved in 8.0ml of dimethyl formamide (DMF) and chromium(VI) content was established by FAAS.

Synthesis, anti-bacterial and anti-oxidant properties of thiadiazaphosphol-2-ones.

4-Amino-5-phenyl-4H-1,2,4-triazole-3-thiol (1) underwent facile condensation with various phosphorus dichlorides (2a-j) in the presence of triethylamine in dry tetrahydrofuran at 60-65 degrees C and afforded corresponding thiadiazaphosphol-2-ones (3a-j). Their chemical structures were characterized using IR, (1)H-, (13)C-, (31)P-NMR and Mass spectral studies. All the title compounds were screened for antioxidant properties by radical scavenging methods such as 1,1-diphenyl-2-picryl hydrazyl (DPPH), hydroxyl and lipid peroxidation.

Effects of oral supplementation with iron(III) hydroxide polymaltose complex on the hematological profile of adolescents with varying iron status.

Objective: To assess the effects of supplementation with oral iron(III) hydroxide polymaltose complex on the iron status of adolescents with and without iron deficiency and anemia.

Method: Adolescents of both sexes with varying iron status were allocated to four treatment groups by using inclusion criteria. Three of the four groups received iron(III) hydroxide polymaltose complex (IPC, Maltofer) containing 100 mg of iron 6 days a week for 8 months.

Juvenile Hormone Analogues, methoprene and fenoxycarb dose-dependently enhance certain enzyme activities in the silkworm Bombyx mori (L).

Use of Juvenile Hormone Analogues (JHA) in sericulture practices has been shown to boost good cocoon yield; their effect has been determined to be dose-dependent. We studied the impact of low doses of JHA compounds such as methoprene and fenoxycarb on selected key enzymatic activities of the silkworm Bombyx mori. Methoprene and fenoxycarb at doses of 1.

A comparison of four DNA extraction methods for the detection of Citrus yellow mosaic badna virus from two species of citrus using PCR and dot-blot hybridization.

Nucleic acid preparations extracted using four procedures were assessed to determine the suitability of the procedure for PCR-based and DNA dot-blot-based detection of Citrus yellow mosaic badna virus (CMBV) from two citrus species, acid lime and pummelo. It was found that the success of PCR detection depended upon the procedure of DNA extraction whereas the dot-blot detection was successful with all extraction methods examined. CMBV DNA sequences amplified from two citrus species indicated high nucleotide sequence identity to the sequences reported previously from sweet orange.

Exercise training with ageing protects against ethanol induced myocardial glutathione homeostasis.

Glutathione plays a central role in the maintenance of cellular antioxidant defense. The alterations in the glutathione and associated recyclic enzymes caused by both exercise training and ethanol are well documented; however, their interactive effects with age are not well understood. Therefore, the influence of ageing and the interactive effects of exercise training and ethanol on the myocardial glutathione system in 3 months and 18 months old rats were examined.

WITHDRAWN: Spectrophotometric determination of deltamethrin in its formulations and environmental samples.

This article has been withdrawn consistent with Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).

Effect of oral supplementation with iron(III)-hydroxide polymaltose complex on the immunological profile of adolescents with varying iron status.

Objective: To assess the effects of iron supplementation on immunological parameters of adolescents with varying iron status.

Method: Adolescents of both sexes with varying iron status were allocated to four treatment groups by using inclusion criteria. Three of the four groups received iron(III)-hydroxide polymaltose complex (IPC, Maltofer) containing 100 mg of iron 6 days a week for 8 months.

Synthesis of [3-(3-chloro-4-fluorophenyl)-2-oxo-3,4-dihydro-2H-2lambda5- benzo[e][1,3,2]oxazaphosphinin-2-yl]-(aryl/alkyl) methanols and their bioactivity on sugarcane smut.

Synthesis of some new substituted [3-(3-chloro-4-fluorophenyl)-2-oxo-3,4-dihydro-2H-2lambda(5)-benzo[e][1,3,2]oxazaphosphinin-2-yl]-(aryl/alkyl)methanols (7a-k) based on the Pudovick reaction was accomplished in the presence of niobium pentoxide (Nb(2)O(5)) without using an external chiral ligand. Nb(2)O(5) appears to form the metal complex intermediate catalyst system (6) by reacting with 3-(3-chloro-4-fluoro-phenyl)-3,4-dihydrobenzo[e][1,3,2]oxazaphosphinine-2-oxide (4), which not only directs the Pudovick addition reactions of aldehyde but also increases the yields and purity of the products. These compounds exhibited a lethal effect on whip smut of sugarcane and were degraded in the environment in the presence of bacteria and fungi to nontoxic phosphate residues that act as possible plant nutrients.

Ethnobotanical survey of plants used to treat asthma in Andhra Pradesh, India.

Tribal and non-tribal inhabitants of Andhra Pradesh used nearly 80 medicinal plants for treating asthma. The tribal people have a strong faith and belief in the traditional health care system, through herbal treatment. Plant species are generally used along with other materials and plant products in different combinations to effective cure.

Speciation determination of chromium(III) and (VI) using preconcentration cloud point extraction with flame atomic absorption spectrometry (FAAS).

bis-[2-Hydroxy-1-naphthaldehyde] thiourea was synthesized and preconcentration cloud point extraction (CPE) for speciation determination of chromium(III) and (VI) in various environmental samples with flame atomic absorption spectrometry (FAAS) has been developed. Chromium(III) complexes with bis-[2-hydroxynaphthaldehyde] thiourea is subsequently entrapped in the surfactant micelles. After complexation of chromium(III) with reagent, the analyte was quantitatively extracted to the surfactant-rich phase in the non-ionic surfactant Triton X-100 after centrifugation.

WITHDRAWN: Simple and rapid spectrophotometric method for the determination of bendiocarb in its formulations and environmental samples.

This article has been withdrawn consistent with Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).

WITHDRAWN: Copper(II) preconcentration on Amberlite XAD-2010 loaded microorganisms prior to its spectrophotometric determination.

This article has been withdrawn consistent with Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).

WITHDRAWN: Selective spectrophotometric determination of cobalt(II) in various environmental samples with 2-(chromen-2'-onyl)-5(4''-chlorophenyl)1,3,4-oxadiazole.

The present work describes a selective, rapid and economical spectrophotometric method for the determination of cobalt(II) in various environmental samples. The method is based on the formation of pink colored complex of a stoichiometric ratio 1:2 between cobalt(II) and 2-(chromen-2'-onyl)-5-(4''-chlorophenyl)1,3,4-oxadiazole at pH 6.0+/-0.

RETRACTED: Spectrophotometric determination of Fenitrothion in formulations and environmental samples.

This article has been retracted at the request of the Editors-in-Chief. Please see Elsevier Policy on Article Withdrawal (http://www.elsevier.

WITHDRAWN: The flow-injection spectrophotometric detection of Thallium (III) in environmental and biological samples using newly synthesized reagent.

This article has been withdrawn consistent with Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).

Suppression of male reproduction in rats after exposure to sodium fluoride during early stages of development.

Sodium fluoride (NaF), a widespread natural pollutant was given to sperm-positive female rats throughout gestation and lactation at a dose of 4.5 and 9.0 ppm via drinking water.

Preconcentration and solid phase extraction method for the determination of Co, Cu, Ni, Zn and Cd in environmental and biological samples using activated carbon by FAAS.

2-{[1-(2-Hydroxynaphthyl) methylidene] amino} benzoic acid (HNMABA) was synthesized for solid phase extraction (SPE) to the determination of Co, Cu, Ni, Zn and Cd in environmental and biological samples by flame atomic absorption spectrophotometry (FAAS). These metals were sorbed as HNMABA complexes on activated carbon (AC) at the pH range of 5.0+/-0.

RETRACTED: Development of novel reactions for the simple and sensitive spectrophotometric determination of vanadium in various samples.

This article has been retracted at the request of the Editors-in-Chief. Please see Elsevier Policy on Article Withdrawal (http://www.elsevier.

Determination of Co(II) in water and soil samples using spectrophotometry coupled with preconcentration on 4-amino methyl pyridine anchored silica gel column.

4-amino methyl pyridine anchored silica gel (4-AMPS) was used as a sorbent in a simple sensitive spectrophotometry determination of Co(II) in various samples using piperazine dithiocarbamate as a color developing agent (lambda(max)=390 nm) at pH 5.0+/-0.2.

Solid phase extraction method for the determination of lead, nickel, copper and manganese by flame atomic absorption spectrometry using sodium bispiperdine-1,1'-carbotetrathioate (Na-BPCTT) in water samples.

A novel column solid phase extraction procedure was developed for the determination of lead, nickel, copper and manganese in various water samples by flame atomic absorption spectrometry (FAAS) after preconcentration on sodium bispiperdine-1,1'-carbotetrathioate (Na-BPCTT) supported by Amberlite XAD-7. The sorbed element was subsequently eluted with 1M nitric acid and the acid eluates are analysed by Flame atomic absorption spectrometry (FAAS). Various parameters such as pH, amount of adsorbent, eluent type and volume, flow-rate of the sample solution, volume of the sample solution and matrix interference effect on the retention of the metal ions have been studied.

Inductively coupled plasma-optical emission spectrometry for on-line determination of multi trace elements in environmental samples after preconcentration by using Borassus flabellifer inflorescence loaded with 2-propylpiperidine-1-carbodithioate.

A procedure was developed for the determination of Cu, Mn, Pb, Cd, Co, Cr, and Zn in water samples by Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES) after preconcentration on synthesized 2-propylpiperidine-1-carbodithioate supported by Borassus flabellifer Inflorescence (BFI). The sorbed element was subsequently eluted with 0.4 M HNO3, and the acid eluates were analyzed by ICP-OES.