EPA Method 9214

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EPA Method 9214:
POTENTIOMETRIC DETERMINATION OF FLUORIDE IN AQUEOUS SAMPLES WITH ION-SELECTIVE ELECTRODE

Summary:
Total solubilized fluoride is determined potentiometrically using a fluoride ion-selective electrode (ISE) in conjunction with a standard single-junction reference electrode, or a fluoride combination ISE, and a pH meter with an expanded millivolt scale or an ISE meter capable of being calibrated directly in terms of fluoride concentration.

Scope:
This method can be used for measuring total solubilized fluoride in drinking waters, natural surface waters, groundwaters, domestic and industrial wastewaters, and in soil extracts (ASTM methods D4646-87, D5233-92 or D3987-85).

Report Number:
SW-846 Ch 5