1. Schema de intercomparare AQUACHECK 2023 - runda AQ648, proba 5G, Toxic Metals in Groundwater (Preserved in 0.5% Nitric Acid). Target analytes: Cadmium; Lead; Nickel; Selenium; Arsenic; Antimony; Mercury; Cobalt; Vanadium; Chromium;Molybdenum; Tin; Beryllium; Titanium**; Lanthanum**. Supplied as: 1 x 500mL metals sample containing all analytes except mercury and tin; 1 x 30mL mercury spiking solution (Preserved in 0.2% HC...

1. Schema de intercomparare AQUACHECK 2023 - runda AQ648, proba 5G, Toxic Metals in Groundwater (Preserved in 0.5% Nitric Acid). Target analytes: Cadmium; Lead; Nickel; Selenium; Arsenic; Antimony; Mercury; Cobalt; Vanadium; Chromium;Molybdenum; Tin; Beryllium; Titanium**; Lanthanum**. Supplied as: 1 x 500mL metals sample containing all analytes except mercury and tin; 1 x 30mL mercury spiking solution (Preserved in 0.2% HCl acid); 1 x 30mL tin spiking solution. Data estimata de livrare de la LGC: 26.06.2023, 2. Schema de intercomparare AQUACHECK 2023 - runda AQ649, proba 1H, Major Inorganic Components in hard, surface water. Target anaytes:Calcium; Magnesium; Total Hardness; Alkalinity; Potassium; Sodium; Chloride; Sulfate; Fluoride; Conductivity (20°C); Kjeldahl Nitrogen; Total Phosphorus; Barium. Supplied as: 2 x 1L hard, surface water; 1 x 30mL Kjeldahl nitrogen spiking solution; 1 x 30mL total phosphorus spiking solution. Data estimata de livrare de la LGC: 10.07.2023/ 3. Schema de intercomparare AQUACHECK 2023 - runda AQ649, proba 2H 1 Nutrients and Others in hard, surface water. Target analytes: Total oxidised nitrogen (TON); Silicate; Nitrite; Ammonia; Soluble reactive phosphorus (PO4); pH at 20-25°C; Conductivity (20°C); Colour; Permanganate index (PI); Total Cyanide; Free Cyanide; Nitrate; Total Dissolved Solids. Supplied as: 1 x 1L hard, surface water; 7 x 30mL spiking solutions for nitrite, ammonia, soluble reactive phosphorus, col

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