1.14402
Chromate Test
colorimetric, 0.005-0.10 mg/L (Cr), 0.011-0.22 mg/L (CrO42-), for use with MQUANT®
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About This Item
UNSPSC Code:
41116116
Recommended Products
specific analyte(s)
chromate
Quality Level
measuring range
0.005-0.10 mg/L (Cr)
0.011-0.22 mg/L (CrO42-)
compatibility
for use with MQUANT®
detection method
colorimetric
storage temp.
15-25°C
General description
Method: colorimetric with color card and comparator block with long test tubes 0.005 - 0.01 - 0.02 - 0.03 - 0.04 - 0.05 - 0.06 - 0.08 - 0.10 mg/l Cr 0.011 - 0.022 - 0.045 - 0.07 - 0.09 - 0.11 - 0.13 - 0.18 - 0.22 mg/l CrO₄²⁻ MQuant®
The MQuant® Chromate test (formally MColortest®) measures chromium(VI) present in the sample as chromate or dichromate ions in wastewater and percolating water, groundwater and surface water, industrial water and drinking water.
Method
In weakly phosphoric solution chromium(VI) ions react with diphenylcarbazide to form chromium(III) and diphenylcarbazone, which form a red-violet complex. The chromate concentration is measured semiquantitatively by visual comparison of the color of the measurement solution with the color fields of a color card. The unique brilliance of the print and their fine color graduation allow precise analyses, even at the lower end of the concentration range. Due to the long test tubes a sensitive measurement range can be covered.
Method
In weakly phosphoric solution chromium(VI) ions react with diphenylcarbazide to form chromium(III) and diphenylcarbazone, which form a red-violet complex. The chromate concentration is measured semiquantitatively by visual comparison of the color of the measurement solution with the color fields of a color card. The unique brilliance of the print and their fine color graduation allow precise analyses, even at the lower end of the concentration range. Due to the long test tubes a sensitive measurement range can be covered.
The test measures chromium(VI) present in the sample as chromate or dichromate ions in wastewater and percolating water, groundwater and surface water, industrial water and drinking water.
Application
- Environmental Monitoring: Chromate tests are essential for monitoring chromium(VI) levels in water and soil. These tests help in assessing environmental pollution caused by industrial discharge and are crucial for ensuring compliance with environmental regulations. Recent research has focused on the simultaneous extraction of phosphate and chromate using nano mixed (Al-Fe-Zr) oxide adsorbents, demonstrating enhanced sensitivity and accuracy in detecting chromate contamination in water (Pala et al., International Journal of Environmental Analytical Chemistry, 2021).
Legal Information
MCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, Germany
MQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany
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Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Met. Corr. 1 - Skin Irrit. 2
Storage Class
8A - Combustible, corrosive hazardous materials
wgk_germany
WGK 3
Certificates of Analysis (COA)
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