Chromium Continuous Analysis from SEIBOLD-Wasser.pdf
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The document details the Seibold online-analyzer for measuring chromium in sources like drinking water and industrial applications, emphasizing its high accuracy and minimal maintenance. Chromium exists in various valences, and its toxicity varies significantly based on its chemical form, with hexavalent chromium being more harmful. The analyzer operates continuously, requiring a small sample size, and features automated calibration and cleaning for optimal performance.
Chromium Continuous Analysis from SEIBOLD-Wasser.pdf
- 1. Continuous Analysis. Reliable Results. COMPOSER Heinrich Proch - SEIBOLD Online-Analyser for Chromium Sources Natural sources. Chromium is widely distributed in the Earth’s crust. It can exist in valences of +2 to +6. In general, food appears to be the major source of intake. Industry. Chromium is seldom used alone; as an additive it endows alloys or materials with new properties: strength, hardness, permanence, hygiene, color and resistance to temperature, wear and corrosion. Drinking water. A guideline value of 0.05 mg/litre of total chromium is recommended in drinking-water. Toxicity. In humans and animals, Cr(III) is an essential nutrient. The overall toxicity, carcinogenicity and general hazards of chromium are highly related to chemical speciation, the hexavalent chromium compounds being more toxic than the trivalent compounds. Method Metal is measured as chelate complex between metal ions in the waste water and sensitive spectrophotometric reagent dye. Change of the intensity of the visible light throughout cuvette containing formed metal complex is directly proportional to metal concentration. Advantage of the system Robust design. Minimal maintenance. Easy handling. High accuracy and precision. Suitable for mission critical applications. Automated cleaning and calibration. Can measure total Cr and Cr VI. System information Measurement variable Chromium (Cr); Cr tot; Cr VI. Measurement application Drinking water, river monitoring, electroplating and semiconducting industry Measurement ranges 0.005 – 1.00 mg/L (ppm) other ranges possible upon request Accuracy and Precision ± 3 % (based on full scale) Resolution 0.005 mg/L Calibration and cleaning automated Seibold Reagent kit Buffer and Dye Provided by Sigma Aldrich
- 2. Continuous Analysis. Reliable Results. COMPOSER Heinrich Proch - SEIBOLD Online-Analyser for Chromium MEASUREMENT INFORMATION Measurement method Spectrophotometric (LED, detector) Measurement interval Continuous; Discontinuous (programmable, external start) Sample and Reagents consumption per measurement Sample: ~ 75 - 200 ml Seibold Buffer and Reagent: ~ 3 ml ENVIRONMENTAL DATA Ambient operating temperature, sample temperature: 5 to 40°C Ambient operating humidity: Up to 95 % RH non-condensing (bellow the condensation limit) ELECTRICAL DATA Power supply Supply voltage: 220 … 230 V AC, 50…60 Hz (110 V AC or 24 V DC, optional) Power consumption: approx 50 VA Output signal: 4…20 mA Screen Color, TFT, liquid crystal display (LCD) with built-in backlight and brightness adjustment. MAINTENANCE Maintenance interval: 3 months SEIBOLD Wasser-Analysatorenfabrik GmbH, Industriepark Donau, Inkustrasse 1-7/5/2, A-3400 Klosterneuburg, phone: +43 22 43 20 787, web: www.seibold-wasser.at, e-mail: office@seibold-wasser.at