Extended Data Fig. 5: Aquatic Hg concentration of sub-watersheds in China in the absence of MWT plants in 2022. | Nature Food

Extended Data Fig. 5: Aquatic Hg concentration of sub-watersheds in China in the absence of MWT plants in 2022.

From: China’s municipal wastewater policies enhanced seafood safety and offset health risks from atmospheric mercury emissions in the past four decades

Extended Data Fig. 5: Aquatic Hg concentration of sub-watersheds in China in the absence of MWT plants in 2022.The alternative text for this image may have been generated using AI.

According to China’s Environmental quality standards for surface water110, the Hg concentration limit for Class-I and Class-II waterbodies is 0.05 μg L–1. The Hg concentration limit for Class-III waterbodies is 0.1 μg L–1, which is the Hg concentration limit for aquatic breeding areas. The Hg concentration limit for Class-IV and Class-V waterbodies is 1 μg L–1. Base map from https://www.tianditu.gov.cn/.

Back to article page