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Table 3 Test results of different sampling periods in rural areas of Yantai from 2015 to 2018

From: The analysis of groundwater nitrate pollution and health risk assessment in rural areas of Yantai, China

Water typeNitrate nitrogen content (mg/L)Number of samplesQualified rate(%)
Dry season21.6 ± 18.1117448.98
Wet season22.2 ± 18.2117446.76
total21.9 ± 18.3234848.59