Bromine and iodine in 1997 UK total diet study samples

Area of Science:

• Environmental Chemistry
• Human Nutrition
• Food Safety Analysis

Background:

• The UK Total Diet Study (TDS) monitors dietary intake of various elements.
• Recent regulatory focus on iodine prompted a need for updated data, while bromine had not been previously assessed.
• Baseline data for bromine and iodine in the UK diet was lacking.

Purpose of the Study:

• To determine concentrations of bromine and iodine in the 1997 UK Total Diet Study (TDS) food samples.
• To estimate the dietary exposure of UK consumers to bromine and iodine.
• To assess potential health risks associated with current dietary levels of these elements.

Main Methods:

• Analysis of 20 food groups from the 1997 UK TDS using Inductively Coupled Plasma Mass Spectrometry (ICP-MS).
• Samples were collected from 20 UK towns and analyzed for total bromine and total iodine concentrations.
• Calculation of population average dietary exposures based on analyzed element concentrations.

Main Results:

• Estimated average daily iodine intake was 0.25 mg, consistent with previous surveys.
• Estimated average daily bromine intake was 3.6 mg.
• Iodine concentrations aligned with recent survey data, and bromine levels were consistent with historical data.

Conclusions:

• The 1997 UK TDS provides up-to-date baseline data for dietary bromine and iodine.
• Estimated dietary exposures to bromine and iodine in the UK are within safe limits.
• The study supports ongoing monitoring of essential elements in the national diet.