Table 2 Iodine levels in salt samples treated differently during iodation processes
From: Improved salt iodation methods for small-scale salt producers in low-resource settings in Tanzania
Condition of salt treatment | Salt heap code no. | Iodine content in salt (ppm) | |||||||
|---|---|---|---|---|---|---|---|---|---|
Top layer in bags | Middle layer in bags | Bottom layer in bags | Estimated total iodine | ||||||
n | Median (range) | n | Median (range) | n | Median (range) | n | Median (range) | ||
Unsupervised iodation without altering KIO3 concentration (<100 g) or equipment | 1 | 5 | 19.0 (18.0 – 25.4) | 5 | 10.6 (6.3 – 11.6) | 5 | 8.5 (4.2 – 15.9) | 15 | 11.6 (4.2 – 25.4) |
2 | 5 | 45.5 (2.1 – 60.3) | 5 | 5.3 (4.2 – 6.3) | 5 | 2.1 (1.1 – 5.3) | 15 | 5.3 (1.1 – 60.3) | |
3 | 5 | 97.3 (14.8 – 110) | 5 | 10.6 (8.5 – 14.8) | 5 | 5.3 (4.2 – 18.0) | 15 | 12.7 (4.2 – 110.0) | |
Total | 15 | 25.4 (2.1 – 110.0) | 15 | 8.5 (4.2 – 14.8) | 15 | 5.3 (1.1 – 18.0) | 45 | 10.6 (1.1 – 110.0) | |
Unsupervised iodation using improved method and 204 g KIO3 | 8 | 5 | 55.0 (43.4 – 61.4) | 5 | 55.0 (41.3 – 65.6) | 5 | 58.2 (32.4 – 63.5) | 15 | 56.1 (32.8 – 65.6) |
9 | 5 | 54.0 (50.8 – 74.1) | 5 | 63.5 (59.2 – 71.9) | 5 | 63.5 (59.2 – 83.6) | 15 | 63.5 (50.8 – 83.6) | |
10 | 5 | 61.5 (56.0 – 71.6) | 5 | 58.2 (49.2 – 68.9) | 5 | 65.4 (59.2 – 72.4) | 15 | 61.5 (49.2 – 72.3) | |
Total | 15 | 59.2 (43.4 – 74.1) | 15 | 60.3 (41.3 – 71.9) | 15 | 60.3 (32.8 – 50.8) | 45 | 59.9 (32.8 – 83.6) | |