Total Alkalinity (总碱度) Total Alkalinity (总碱度)Alkalinity refers to the amount and types of chemical compounds that can shift the pH toward the higher side of neutrality. Alkalinity is usually measured by the presence of bicarbonate (HCO3-) and carbonates (CO3=) and acts to buffer lakes from acidic inputs, thus is a measure…… http://www.samsco.com.cn/info/169419.htm