水质分析仪主要采用离子选择电极测量法来实现精确检测的。仪器上的电极：PH、氟、钠、钾、钙、镁、和参比电极。每个电极都有一离子选择膜，会与被测样本中相应的离子产生反应，膜是一离子交换器，与离子电荷发生反应而改变了膜电势，就可检测液，样本和膜间的电势。膜两边被检测的两个电势差值会产生电流，样本，参考电极，参考电极液构成“回路”一边，膜,内部电极液，内部电极为另一边。
The water quality analyzer mainly uses ion selective electrode measurement method to achieve accurate detection. Electrodes on the instrument: pH, fluorine, sodium, potassium, calcium, magnesium, and reference electrodes. Each electrode has an ion selective membrane that reacts with the corresponding ions in the tested sample. The membrane is an ion exchanger that reacts with ion charges to change the membrane potential and detect the potential between the liquid, sample, and membrane. The difference between the two potential values detected on both sides of the membrane will generate a current. The sample, reference electrode, and reference electrode liquid form one side of the "loop", while the membrane, internal electrode liquid, and internal electrode are the other side.
内部电极液和样本间的离子浓度差会在工作电极的膜两边产生电化学电压，电压通过高传导性的内部电极引到到放大器，参考电极同样引到放大器的地点。通过检测一个精确的已知离子浓度的标准溶液获得定标曲线，从而检测样本中的离子浓度。
The difference in ion concentration between the internal electrode solution and the sample will generate electrochemical voltage on both sides of the working electrode membrane. The voltage is introduced to the amplifier through the highly conductive internal electrode, and the reference electrode is also introduced to the location of the amplifier. Obtain a calibration curve by detecting an accurately known ion concentration standard solution, thereby detecting the ion concentration in the sample.
溶液中被测离子接触电极时，粪池模具 路缘石模具 唐山通风管道 塑钢电缆挂钩 钢纤维 钢制拍门 在离子选择电极基质的含水层内发生离子迁移。迁移的离子的电荷改变存在着电势，因而使膜面间的电位发生变化，在测量电极与参比电极间产生一个电位差。
When the measured ion in the solution contacts the electrode, ion migration occurs within the aquifer of the ion selective electrode matrix. The change in charge of migrating ions has an electric potential, resulting in a change in potential between the membrane surfaces, creating a potential difference between the measurement electrode and the reference electrode.
水质指标
Water quality indicators
水质安全106项检测指标与仪器
106 detection indicators and instruments for water quality safety
——水质指标由GB 5749-85的35项增加至106项，增加了71项；修订了8项；其中：
——The water quality indicators have increased from 35 items in GB 5749-85 to 106 items, an increase of 71 items; Revised 8 items; Among them:
——微生物指标由2项增至6项，增加了大肠埃希氏菌、耐热大肠菌群、贾第鞭毛虫和隐孢子虫；修订了总大肠菌群；
——Microbial indicators increased from 2 to 6, with the addition of Escherichia coli, heat-resistant coliform group, Giardia and Cryptosporidium; Revised the total coliform group;
——饮用水消毒剂由1项增至4项，增加了一氯胺、臭氧、二氧化氯；
——The number of disinfectants for drinking water has increased from 1 to 4, with the addition of chloramine, ozone, and chlorine dioxide;
毒理指标中无机化合物由10项增至21项，增加了溴酸盐、亚氯酸盐、氯酸盐、锑、钡、铍、硼、钼、镍、铊、氯化氰；并修订了砷、镉、铅、硝酸盐；
The number of inorganic compounds in toxicological indicators has increased from 10 to 21, with the addition of bromate, chlorite, chlorate, antimony, barium, beryllium, boron, molybdenum, nickel, thallium, and cyanide chloride; And revised arsenic, cadmium, lead, nitrate;