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1986年4—5月间,我们在长江的安庆和武汉段分别取了水样,现场进行pH值的测定,水经过酸化后带回实验室分析。结果表明(表1)它们与海水及珠江水都有不同的分布特征。
From April to May 1986, we took water samples from Anqing and Wuhan sections of the Yangtze River respectively to measure the pH value on site. After the water was acidified, the water was taken back to the laboratory for analysis. The results show (Table 1) that they have different distribution characteristics with seawater and Pearl River water.