ISO TS 17951-1-2016 PDF

Full title and description

ISO/TS 17951-1:2016 — Water quality — Determination of fluoride using flow analysis (FIA and CFA) — Part 1: Method using flow injection analysis (FIA) and spectrometric detection after off-line distillation. This technical specification defines a flow-injection based procedure for converting any insoluble or complexed fluoride to fluoride ion by manual distillation and measuring fluoride in the distillate by flow analysis with lanthanum alizarin complexone and spectrometric detection.

Abstract

ISO/TS 17951-1:2016 specifies an analytical method for determination of fluoride in waters, waste waters and effluents by flow injection analysis (FIA). Insoluble or complexed fluoride is converted to fluoride ion by a manual distillation (sulfuric/phosphoric acid) and the fluoride ion in the distillate is measured using flow analysis with lanthanum alizarin complexone and spectrometric detection. Two working ranges are defined: working range I (0.1 mg/L to 1 mg/L) and working range II (1 mg/L to 10 mg/L). The method is intended for industrial waste waters, effluents, surface waters, ground waters and leachates, and is not recommended for routine drinking‑water testing where distillation is not required.

General information

• Status: Published (Technical Specification).
• Publication date: June 2016 (ISO catalogue shows 2016; catalog entries record 17 June 2016 as the publication listing).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.060.50 (Examination of water for chemical substances).
• Edition / version: Edition 1 (ISO/TS 17951-1:2016).
• Number of pages: 12.

Key bibliographic and lifecycle data as recorded in ISO and national-catalogue entries. The specification was published in 2016 and appears in ISO’s catalogue as ISO/TS 17951-1:2016; the ISO catalogue also records the regular five‑year review/confirmation cycle for this entry.

Scope

Specifies a procedure for determination of fluoride in waters, waste waters and effluents by flow injection analysis (FIA) where insoluble or complexed fluoride is liberated by manual distillation (sulfuric/phosphoric acid) and fluoride in the distillate is measured by a flow‑analysis method using lanthanum alizarin complexone with spectrometric detection. The method targets industrial waste waters, effluents, surface and ground waters and leachates; it describes two working ranges (0.1–1 mg/L and 1–10 mg/L) and is not recommended where a distillation step is unnecessary (typical routine drinking-water testing).

Key topics and requirements

• Flow injection analysis (FIA) procedure for fluoride measurement.
• Manual/off-line distillation step (acid distillation using sulfuric/phosphoric acid) to convert complexed/insoluble fluoride to fluoride ion.
• Spectrometric detection using lanthanum alizarin complexone as the reagent.
• Two prescribed calibration/working ranges: 0.1–1 mg/L and 1–10 mg/L (with corresponding calibration specifications).
• Application focus: industrial waste waters, effluents, surface waters, ground waters and leachates; not intended as the primary method for routine drinking-water without modification.
• Performance and procedure requirements (reagents, apparatus, blank and calibration checks, expression of results) consistent with ISO/TC 147 water‑quality testing practice.

These topics are drawn from the method description and scope in the published technical specification.

Typical use and users

Environmental and industrial water‑testing laboratories, wastewater monitoring facilities, regulatory and consulting laboratories performing fluoride determinations in effluents, ground and surface waters, landfill leachates and similar matrices where fluoride may be present in complexed or particulate forms that require a distillation step prior to ionic measurement. Method adopters will be analytical chemists and laboratory managers responsible for method validation, calibration and routine quality control in line with ISO water‑testing practice.

Related standards

ISO/TS 17951 is published in at least two parts: Part 1 (FIA, off‑line/manual distillation) and Part 2 (CFA with automated in‑line distillation — ISO/TS 17951-2:2016). Other related water‑quality standards for anion and elemental determinations and pH that laboratories commonly use alongside ISO/TS 17951-1 include ISO 10304‑1 (dissolved anions by ion chromatography), ISO 10523 (pH) and ISO 11885 (selected elements by ICP‑OES).

Keywords

fluoride, flow injection analysis, FIA, continuous flow analysis, CFA, distillation, lanthanum alizarin complexone, spectrometric detection, water quality, effluents, leachate, wastewater analysis.

FAQ

Q: What is this standard?

A: ISO/TS 17951-1:2016 is a Technical Specification that defines a flow injection analysis (FIA) method with an off‑line/manual distillation step and spectrometric detection (lanthanum alizarin complexone) for determination of fluoride in various water matrices.

Q: What does it cover?

A: It covers sample preparation (manual distillation to release fluoride), the FIA measurement procedure, reagents and calibration, working ranges (0.1–1 mg/L and 1–10 mg/L), quality checks and the types of water matrices for which the method is appropriate.

Q: Who typically uses it?

A: Environmental and industrial testing laboratories, wastewater monitoring and environmental consulting labs that need to measure fluoride in effluents, surface and ground waters, landfill leachates and other matrices where fluoride may be complexed or particulate.

Q: Is it current or superseded?

A: The specification was published in 2016 (ISO/TS 17951-1:2016). ISO catalogue entries show the normal five‑year review/confirmation cycle; catalog lifecycle information records confirmation activity consistent with ISO’s periodic review (catalog entries indicate review/confirmation activity recorded in 2023). Users should check the official ISO catalogue or their national standards body for the very latest status before purchase or adoption.

Q: Is it part of a series?

A: Yes — ISO/TS 17951 was published in multiple parts in 2016. Part 1 covers FIA with off‑line/manual distillation (this document) and Part 2 covers CFA with automated in‑line distillation (ISO/TS 17951-2:2016). Laboratories implementing fluoride analysis in flow systems may choose the part that matches their instrumentation and sample‑processing needs.

Q: What are the key keywords?

A: fluoride; flow injection analysis (FIA); continuous flow analysis (CFA); distillation; lanthanum alizarin complexone; spectrometric detection; water quality; effluents.