The platinum-cobalt method measures which property in water?

The platinum-cobalt method measures which property in water?

• A. arsenic
• B. total organic halogens
• C. iron
• D. color

Answer: (D)

This method is used to measure the color of water. The platinum-cobalt procedure is a colorimetric approach where the color intensity of a water sample is compared to a set of platinum–cobalt color standards. The result is reported in platinum–cobalt units, giving a quantitative measure of how colored the water is. It’s specifically about color and uses a color comparator to match the sample to a standard color. Arsenic, iron, and total organic halogens are determined by other analytical methods that target those substances directly, not by a color comparison.

This method is used to measure the color of water. The platinum-cobalt procedure is a colorimetric approach where the color intensity of a water sample is compared to a set of platinum–cobalt color standards. The result is reported in platinum–cobalt units, giving a quantitative measure of how colored the water is. It’s specifically about color and uses a color comparator to match the sample to a standard color.

Arsenic, iron, and total organic halogens are determined by other analytical methods that target those substances directly, not by a color comparison.