GB 7475-1987 水质 铜、锌、铅、镉的测定 原子吸收分光光度法
GB 7467-87 六价铬的测定
GB 6920-86 水质 pH的测定
Handbook of Soil analyze1
TEST METHOD FOR THE DETERMINATION OF pH VALUE OF WATER OR SOIL
Soil pH and Buffer Index
SOIL AND WASTE pH
Recommended Soil pH and Lime Requirement Tests
PH值与氢离子浓度的关系
Determination of pH of Soils by Different Methods
