GB/T 19380-2016Definition and demarcation of water-borne iodine-excess areas and iodine-excess endemial areas (English PDF)

1 Scope

This standard specifies the water quality of iodine and high iodine disease area of the designated indicators and methods.

This standard is applicable to the delineation of water-deficient iodine and high iodine sick areas.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article

Pieces. For undated references, the latest edition (including all modifications) applies to this document.

Determination of iodine in arsenic cerium by catalytic spectrophotometric method

Diagnostic criteria for endemic goiter

3 terms and definitions

The following terms and definitions apply to this document.

4 watershed high iodine area delineation

To the administrative village as a unit, in accordance with the provisions of Appendix A sampling method of sampling, with reference to the national iodine reference laboratory recommended life drinking

Acid iodide in arsenic cerium catalyzed spectrophotometric detection method, the water iodine content detection, residents drinking water iodine median > 100µg/L area.

5 water source iodine disease area delineation

Water in the high iodine region, according to Appendix A sampling method of sampling samples, in accordance with WS276 for local thyroid examination

Broken, according to WS/T 107 urinary iodine content detection, with the following two indicators of the region.

a) 8-year-old to 10-year-old children goiter rate > 5%;

b) The median urinary iodine in children aged 8 to 10 years was > 300 µg/L.

Note. When the two indicators are inconsistent with 8 years of age to 10 years of age in children mainly goiter.