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Analytical methods used by industry for lead in infant formula
Journal - Association of Official Analytical Chemists
|July 1, 1982
Summary
Lead (Pb) levels in infant formula have significantly decreased due to industry efforts since 1978. Advanced analytical methods and strict quality control ensure the safety of these crucial products.
Area of Science:
- Environmental Science
- Analytical Chemistry
- Food Safety
Background:
- Lead (Pb) in liquid infant products is a significant concern, primarily originating from solder in 3-piece can manufacturing.
- Regulatory, industrial, and private analysts have focused on minimizing lead exposure in infant nutrition.
Purpose of the Study:
- To report on the reduction of lead content in infant products over time.
- To evaluate analytical methods used for lead determination.
- To emphasize the importance of quality control in trace metal analysis.
Main Methods:
- Utilized anodic stripping voltammetry and electrothermal atomization (graphite furnace and carbon rod) atomic absorption spectrophotometry for lead analysis.
- Conducted two comparison studies to assess the reliability of these analytical procedures.
- Implemented comprehensive quality control practices and discussed laboratory environment optimization.
Main Results:
- Voluntary surveys show a significant reduction in lead levels in infant formula since 1978.
- Thousands of trace lead determinations confirm the effectiveness of implemented control measures.
- Validation of analytical methods is crucial for accurate lead content assessment.
Conclusions:
- Industrial efforts have successfully reduced lead content in infant products.
- Robust analytical methodologies and stringent quality control are essential for ensuring infant formula safety.
- Optimized laboratory environments enhance the sensitivity and reliability of trace metal analysis.