Evaluation of an Automated Immunoassay System for Quantitative Analysis of Atrazine and Alachlor in Water Samples

1996 ◽  
pp. 183-190 ◽  
Author(s):  
Barbara Staller Young ◽  
Andrew Parsons ◽  
Christine Vampola ◽  
Hong Wang
Keyword(s):  
Quantitative Analysis ◽  
Water Samples ◽  
Automated Immunoassay

scholarly journals A SIMPLE SPECTROPHOTOMETRIC METHOD FOR THE QUANTITATIVE ANALYSIS OF PHOSPHATE IN THE WATER SAMPLES

2018 ◽  
Vol 7 (2) ◽  
pp. 198
Author(s):  
Nur Habibah ◽  
I Gusti Ayu Shri Dhyanaputri ◽  
I Wayan Karta ◽  
Cokorda Dewi Widhya Hana Sundari ◽  
Mochammad Choirul Hadi
Keyword(s):  
Quantitative Analysis ◽  
Spectrophotometric Method ◽  
Water Samples ◽  
Calibration Graph ◽  
Ammonium Molybdate ◽  
Official Method ◽  
Phosphate Content ◽  
Color Intensity ◽  
Molybdenum Blue ◽  
Sulfuric Acid Medium

A simple spectrophotometric method was used to determine the phosphate content in the water sampels. The method is based on the formation of molybdenum blue complex from the reaction of orthophosphate and ammonium molybdate followed by reduction with ascorbic acid in the aqueous sulfuric acid medium. The color intensity of the molybdenum blue complex is proportionally to the phosphate content in the solution. The system obeys Lamber-Beer’s Law at the 890 nm in the concentration range of 0.1-1 mg P/L and the linier calibration graph was obtained with the slope, 0.6334, intercept, 0.0074 and correlation coefficient of 0.9988. This official method was also used for the quantitative analysis of phosphate in the water samples and the satisfactory result was obtained. The range of phosphate concentration in the water samples are 0.033 – 2.943 mg P/L.

Deconvolution of alpha liquid scintillation spectra for quantitative analysis of actinide elements in water samples

2004 ◽  
Vol 92 (3) ◽  
Author(s):  
Jean Aupiais
Keyword(s):  
Quantitative Analysis ◽  
Water Samples ◽  
Environmental Samples ◽  
Liquid Scintillation ◽  
Isotopic Ratio ◽  
Ratio Determination ◽  
Alpha Beta ◽  
Uranium Plutonium ◽  
Actinide Elements

SummaryThe reliability and accuracy of actinide measurement in environmental samples strongly depend on theThe intensity of the internal conversions for thorium, uranium, plutonium and americium have been calculated and normalised to the intensity of the main alpha transition. These data can be used to determine the activity of any above-mentioned actinide by alpha liquid scintillation with alpha/beta discrimination. The quantitative analysis and the isotopic ratio determination of several certified solutions of actinides demonstrate the validity of this approach.

scholarly journals A Quantitative Analysis of Chromium and Zinc in Water and Raw Milk in Chittagong, Bangladesh

2016 ◽  
Vol 8 (1) ◽  
pp. 93-100
Author(s):  
S. Akther ◽  
S. M. S. Shahriar ◽  
M. K. Alam ◽  
H. M. Zakir
Keyword(s):  
Heavy Metals ◽  
Quantitative Analysis ◽  
Water Samples ◽  
Chromium Content ◽  
Raw Milk ◽  
Milk Samples

The concentration of selected heavy metals (chromium and zinc) was detected and estimated in water and raw milk collected from Chittagong City of Bangladesh. A total of 25 water samples and 20 raw milk samples were collected from different farms situated in 10 locations of Chittagong, Bangladesh. Chromium content in water was obtained in the range from 0.2 µg/L to 13 µg/L. The highest level of chromium content in water was 13.068 µg/L. The content of chromium in raw milk was obtained in the range from 2 µg/L to 17 µg/L. The highest level of chromium in milk was 17.062 µg/L. Chromium concentrations in water and milk were below the maximum allowed limit.  The concentration of zinc in water was in the range from 0.01 mg/L to 1 mg/L. The highest level of zinc in water was 1.024 mg/L. The concentration of zinc in raw milk was in the range from 0.6 mg/L to 0.9 mg/L. The highest concentration of zinc in water was 1.024 mg/L which is around the toxicological guidance value of zinc.

scholarly journals Quantitative Analysis of Multi-elements Including Fluorine in Spring- and Hot-spring Water Samples Taken around Mt. Iwate by a PIXE System

RADIOISOTOPES ◽  
2005 ◽  
Vol 54 (7) ◽  
pp. 205-212 ◽  
Author(s):  
Jun ITOH ◽  
Shoji FUTATSUGAWA ◽  
Yoshihiro SAITOU ◽  
Koichiro SERA
Keyword(s):  
Quantitative Analysis ◽  
Water Samples ◽  
Hot Spring ◽  
Spring Water

scholarly journals Application of HPLC and TLC with Diode Array Detection After SPE to the Determination of Pesticides in Water Samples from the Zemborzycki Reservoir (Lublin, Southeastern Poland)

2010 ◽  
Vol 93 (6) ◽  
pp. 1748-1756 ◽  
Author(s):  
Tomasz Tuzimski
Keyword(s):  
Quantitative Analysis ◽  
Water Samples ◽  
Array Detector ◽  
Diode Array ◽  
Diode Array Detection ◽  
Diode Array Detector ◽  
Real Water Samples ◽  
Pesticides In Water ◽  
Array Detection

Abstract The application of TLC with a diode array detector (TLC-DAD) and HPLC-DAD after SPE for identification and quantitative analysis of pesticides in water samples is demonstrated. The procedures described for the determination of compounds are inexpensive and can be applied to routine analysis of analytes in water samples after preliminary cleanup and concentration by SPE. Average recoveries for four different cartridges and three solvents by the proposed HPLC-DAD method after SPE also are presented. The efficiency of the SPE procedure was evaluated using real water samples from the Zemborzycki Reservoir, near Lublin, southeastern Poland. The method was validated for precision, repeatability, and accuracy.

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