River water from five points along the Biała Przemsza in industrial Upper Silesia was sampled monthly and analyzed for chromium species by HPLC-ICP-MS. Trivalent chromium dominated, at about two to three times the hexavalent form, which reached about 1 µg/L.
Key numbers
- Hexavalent chromium in river water: maximum 0.93 to 1.19 µg/L across the five points; medians below 0.37 µg/L at three points, 0.51 and 0.67 µg/L at the others (Table 6, p. 4749; N = 30).
- Trivalent chromium: minimum 0.41 to 1.07, maximum 2.59 to 4.63, median 1.74 to 2.51 µg/L (Table 6, p. 4749).
- Speciation LODs 0.19 µg/L (trivalent) and 0.37 µg/L (hexavalent); recoveries 99% and 102% (Table 4, p. 4745).
- Highest total chromium in water about 14 µg/L at point BP5 (Results, Figure 3).
Methods (brief)
Filtered, acidified water for total elements by ICP-MS (Elan 6100 DRC-e); chromium species separated on a Dionex IonPac AG7 column and detected by ICP-MS; BCR three-step sequential extraction of sediments.
Evidence fitness
Supports surface-water chromium speciation data and method detection limits for HPLC-ICP-MS. It does not describe treated drinking water or food.
Limitations
One river and one sampling year; species results summarized only as minimum, maximum and median per site.
Related evidence
- Chromium
- ICP-MS — Inductively coupled plasma mass spectrometry
- Chromium analytical methods and speciation
Update history
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