Copper and Nickel Determination in Grape Extract Cultured around Marvast City,Yazd

copper and nickel determination in grape extract cultured around marvast city,yazd

background: one of the most critical problems in the field of water and food pollution is the heavy metal pollution. agricultural products are exposed to this type of contamination through wastewater; industrial activity and population pollutions are also in its area. since the plant in the affected areas can directly enter heavy metals into the food chain, so, it is important to check their le...

Grape Seed Extract FS

In one study, 287 patients diagnosed with asymptomatic carotid plaques or abnormal plaque free carotid intima-media thickness (CIMT) were randomly assigned to a GSE group (n = 146) or control group (n = 141). As anticipated, after treatment, GSE resulted in significant reduction in MMCIMT progression, while MMCIMT and plaque score were stable and even increased with the control group. The numbe...

Spectrophotometric simultaneous determination of nickel, cobalt and copper by orthogonal signal correction–partial least squares

A method for the simultaneous spectrophotometric determination of nickel, cobalt and copper based on theformation of their complexes with 2-(2-Thiazolylazo)-p-Cresol (TAC) in micellar media of Triton X-100 isproposed. The absorbance spectra were recorded in the range of 500 to 800 nm. The linear concentrationrange for nickel, cobalt and copper in solution calibration sets were 0.05–1.80, 0.10–6...

Simultaneous spectrophotometric determination of lead, copper and nickel using xylenol orange by partial least squares

A partial least squares (PLS) calibration model was developed for the simultaneous spectrophotometricdetermination of Pb (ΙΙ), Cu (ΙΙ) and Ni (ΙΙ) using xylenol orange as a chromogenic reagent. The parameterscontrolling behavior of the system were investigated and optimum conditions were selected. The calibrationgraphs were linear in the ranges of 0.0–9.091, 0.0–2.719 and 0.0–2.381 ppm for lead...

Spectrophotometric Determination of Copper and Nickel in Marine Brown Algae after Preconcentration with Surfactant Assisted Dispersive Liquid-Liquid Microextraction

A simple, fast and effective pre-concentration method for the determination of Cu (copper) and Ni (nickel) was developed using a Surfactant Assisted Dispersive Liquid-Liquid Microextraction (SA-DLLME) coupled by UV-Vis spectrophotometry in marine brown algae. The complexing agent was 1- (2- pyridylazo) – 2 - naphthol (PAN).The effects of various experimental parameters in the extraction ste...

Determination of Trace Copper, Nickel, and Zinc in Boiling Water Reactors Using Nonsuppressed Conductivity Detection