How to make 1000ppm (mg/L) ion standard solution
1)Standard buffer of Ammonium ion (NH4+) ion sensor: 1000ppm(mg/L)
2.9653g of ammonium chloride dissolved in one liter of distilled water;
(Purity AR Ammonium Chloride NH4Cl Molecular Weight: 53.49; Ammonium Ion Molecular Weight: 18.03851)
2)Standard buffer of Calcium ion (Ca2+) ion sensor: 1000ppm(mg/L)
2.7692g of calcium chloride dissolved in one liter of distilled water;
(Purity AR calcium chloride CaCl2 molecular weight: 110.984; calcium ion molecular weight: 40.078)
3)Standard buffer of Nitrate ion (NO3-) ion sensor: 1000ppm(mg/L)
1.6306g of potassium nitrate (preventable explosion) dissolved in one liter of distilled water;
(purity AR potassium nitrate KNO3 molecular weight: 101.10; nitrate ion molecular weight: 62.0017)
4)Standard buffer of Potassium ion (K+) ion sensor: 1000ppm(mg/L)
1.9068g of potassium chloride dissolved in one liter of distilled water;
(Purity AR potassium KCl molecular weight: 74.551; potassium ion molecular weight: 39.0983)
5)Standard buffer of Chloride ion (Cl-) ion sensor: 1000ppm(mg/L)
2.103g potassium chloride dissolved in one liter of distilled water;
(purity AR potassium chloride KCl molecular weight: 74.551; chloride ion molecular weight: 35.45)
6)Standard buffer of Fluoride ion (F-) ion sensor: 1000ppm(mg/L)
2.2101g of sodium fluoride dissolved in one liter of distilled water;
(purity AR sodium fluoride NaF molecular weight: 41.9882; fluoride ion molecular weight: 18.9984032)
7)Standard buffer of Carbon dioxide (CO2) Ion Sensor: 1000ppm(mg/L)
1.9089g of sodium bicarbonate dissolved in one liter of distilled water;
(purity AR sodium bicarbonate NaHCO3 molecular weight: 84.01; carbon dioxide molecular weight: 44.0095)
(Need to add carbon dioxide regulator :after adding, release carbon dioxide gas)
8)Standard buffer of Ammonia (NH3) Ion Sensor: 1000ppm(mg/L)
3.1407g of ammonium chloride dissolved in one liter of distilled water;
(purity AR ammonium chloride NH4Cl molecular weight: 53.49; ammonia molecular weight: 17.031)
Need to add regulator 10M NaOH, that is: one liter of distilled water contains 400g of sodium hydroxide
9)Standard buffer of Nitrite (NO2-) Ion Sensor: 1000ppm(mg/L)
1.4678g of sodium nitrite is dissolved in one liter of distilled water;
(stabilizer can be added: 50mg/L sodium carbonate)
(purity AR sodium nitrite, NaNO2 molecular weight: 68.995; nitrite molecular weight: 47.005)
10)Standard buffer of Magnesium ion (Mg 2+) Ion Sensor: 1000ppm(mg/L)
Purity AR magnesium chloride MgCl2 molecular weight: 95.211; magnesium ion molecular weight: 24.305
Magnesium ion standard solution 1000ppm, that is, 3.917g of magnesium chloride dissolved in one liter of water
11)Standard buffer of Copper ion (Cu 2+) Ion Sensor: 1000ppm(mg/L)
Purity AR copper nitrate Cu(NO3)2 3H2O molecular weight: 241.6016; copper ion molecular weight: 63.546
Copper ion standard solution 1000ppm, that is, dissolve 3.802g of copper nitrate trihydrate in one liter of water; (easy to make explosives, please operate by professionals)
12)Standard buffer of Sulfide ion (S 2-) Ion Sensor: 1000ppm(mg/L)
Thiocyanate ion standard solution (purity AR sodium thiocyanate NaSCN molecular weight: 81.0722; thiocyanate molecular weight: 58.0824)
Thiocyanate ion standard solution 1000ppm, that is, 1.3958g of sodium thiocyanate dissolved in one liter of water;
13)Standard buffer of Sodium ion (Na+) Ion Sensor: 1000ppm(mg/L)
Purity AR sodium chloride NaCl molecular weight: 58.44; sodium ion molecular weight: 22.9898
The sodium ion standard solution is 1000ppm, that is, 2.542g of sodium chloride is dissolved in one liter of water;