Isotope evidence of hexavalent chromium stability in ground water samples

Chemosphere ◽  
2015 ◽  
Vol 138 ◽  
pp. 74-80 ◽  
Author(s):  
Eva Čadková ◽  
Vladislav Chrastný
Keyword(s):  
Ground Water ◽  
Hexavalent Chromium ◽  
Water Samples ◽  
Isotope Evidence

An Improved Ion Chromatographic Method for Fast and Sensitive Determination of Hexavalent Chromium and Total Chromium Using Conductivity Detection

2019 ◽  
Vol 57 (10) ◽  
pp. 939-943
Author(s):  
Thyagarajan Shanmugam ◽  
Joseph Selvaraj ◽  
Uvaraj Mani
Keyword(s):  
Ground Water ◽  
Potassium Permanganate ◽  
Hexavalent Chromium ◽  
Water Samples ◽  
Natural Waters ◽  
Exchange Chromatography ◽  
Preparation Technique ◽  
Total Chromium ◽  
Potassium Permanganate Solution ◽  
Chromium Determination

Abstract Chromium exists in its two stable oxidation states including trivalent chromium (Cr (III)) and hexavalent chromium (Cr (VI)) in natural waters. Chromium is an essential micronutrient in the trivalent form; however, the hexavalent form of chromium is considered to be a carcinogen. It is important to determine the chromium content along with speciation. There are a number of methods available for chromium determination. Speciation of chromium is essential to know the exact composition of chromium. Ion exchange chromatography is one of the techniques used to determine Cr (VI). The proposed method can be used to perform the speciation of Cr (III) and Cr (VI). It is a two-step process: first Cr (VI) is determined, followed by total chromium determination by treating the sample with potassium permanganate solution to oxidize the Cr (III) present in the sample to Cr (VI) and determining it as Cr (VI). Conductivity detector is used for the detection. Addition of potassium permanganate solution to the ground water samples for oxidizing the Cr (III) to Cr (VI) is the newly adopted sample preparation technique. The effect of potassium permanganate oxidation is studied in detail in the proposed method. This method can be used for chromium speciation in river water and ground water samples.

scholarly journals A peep into the state of ground water quality in the district of Tiruvannamalai, Tamil Nadu, India, from a radiological and chemical toxicity perspective

2021 ◽  
Vol 11 (5) ◽  
Author(s):  
Durai Ganesh ◽  
G. Senthilkumar ◽  
P. Eswaran ◽  
M. Balakrishnan ◽  
S. N. Bramha ◽  
...  
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Water Samples ◽  
Tamil Nadu ◽  
Potable Water ◽  
Uranium Concentration ◽  
The State ◽  
Chemical Toxicity ◽  
Ground Water Quality ◽  
Led Fluorimeter

AbstractUranium concentration in the ground water samples from the district of Tiruvannamalai, Tamil Nadu, was measured using an LED fluorimeter. All the samples were qualified as potable water from the radiological perspective. Though some samples showed mild chemical toxicity, they are still safe for ingestion. Different risk coefficients were calculated, and they were compared with recommended safety limits specified by various agencies. Software tools such as QGIS 15, GraphPad Prism 8 and Surfer 15 were employed for developing maps and plots.

Field analysis Cr(VI) in water samples by a smartphone-based ultralong absorption path reflection colorimetric device

2021 ◽  
Author(s):  
Xiaolan Chen ◽  
Cheng Ma ◽  
Qi Kang ◽  
Yu-Qin Chen ◽  
Dazhong Shen
Keyword(s):  
Hexavalent Chromium ◽  
Water Samples ◽  
Environmental Samples ◽  
Field Analysis ◽  
Absorption Path

Hexavalent chromium is highly toxic and regarded as one of the main pollutants in environmental samples. Sophisticated laboratory instruments are commercially available for in-field determination of chromium. It is highly...

Filtration of Ground Water Samples for Metals Analysis

1989 ◽  
Vol 6 (4) ◽  
pp. 385-393 ◽  
Author(s):  
ROBERT W. PULS ◽  
MICHAEL J. BARCELONA
Keyword(s):  
Ground Water ◽  
Water Samples
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