Cyclic Hydrocarbons: PAH and PAC

Polycyclic Aromatic Hydrocarbons (PAH) and Polycyclic Aromatic Compounds (PAC) are hazardous cyclic hydrocarbons known for their carcinogenic, genotoxic, and environmental risks. PAHs, such as benzo[a]pyrene, are classified as carcinogens and can cause genetic mutations, developmental issues, and long-term health conditions like respiratory and cardiovascular diseases. PACs, which include both aromatic and aliphatic compounds, also pose similar environmental and health risks, though generally to a lesser extent.

Polycyclic Aromatic Hydrocarbons (PAH) and Polycyclic Aromatic Compounds (PAC) Analysis- 

  1. Gas Chromatography-Mass Spectrometry (GC-MS)
  2. Gas Chromatography with Flame Ionization Detector (GC-FID):
  3. High-Performance Liquid Chromatography (HPLC) with Fluorescence Detector (FLD)
  4. Liquid Chromatography-Mass Spectrometry (LC-MS/MS)
  5. LC-GC (Liquid Chromatography-Gas Chromatography)
  6. Automated Soxhlet Extraction with GC-MS

Globally Acceptable Standards

  • EU Regulations:

    • Regulation (EC) No 1881/2006: Limits on PAH in food products.
    • REACH Regulation: Restrictions on PAHs in industrial chemicals.

  • US EPA Methods:

    • EPA 610: Determination of PAHs in wastewater.
    • EPA 8310: HPLC for detecting PAHs in soil and sediment.
    • EPA Method 8270D for semi-volatile organic compounds in environmental samples.

  • ISO Standards:

    • ISO 17993: Determination of PAHs in drinking water.
    • ISO 28540: Determination of PAHs in air.
    • ISO 13877 for PAHs in water.
    • ISO 25101 for PAHs in water.

  • ASTM Standards:

    • ASTM D5769: GC-MS method for detecting PAHs in automotive fuels.
    • EN 15527 for PAHs in food matrices.
    • EN 14039 for soil analysis.
    • JRC Technical Report for MOSH/MOAH analysis.

Global Regulation of Polycyclic Aromatic Hydrocarbons (PAH) and Polycyclic Aromatic Compounds (PAC)

 

Due to their toxic, carcinogenic, and persistent nature, Polycyclic Aromatic Hydrocarbons (PAHs) and Polycyclic Aromatic Compounds (PACs) are regulated worldwide across various industries, including food, packaging, environmental monitoring, and consumer products. Regulations focus on setting limits for their presence to protect human health and the environment.

European Union (EU)

  1. Food Safety (Regulation (EC) No 1881/2006):
    1. Limits for benzo[a]pyrene:
      • Oils and fats: 2 µg/kg
      • Smoked meats and fish: 5 µg/kg
    2. Combined PAHs (e.g., benzo[a]pyrene, chrysene, benz[a]anthracene): 10 µg/kg in smoked foods.
  2. Food Contact Materials (Regulation (EU) No 10/2011):
    1. Migrated PAH limits: Typically, below 0.01 mg/kg in food simulants.
  3. REACH Regulation:
    1. Restricts PAHs in consumer goods, such as toys and rubber materials, to 1 mg/kg for specific PAHs.

United States

    1. Environmental Protection Agency (EPA):
      • Drinking water standards: Maximum Contaminant Level (MCL) for PAHs is 0.0002 mg/L for benzo[a]pyrene.
    2. Food and Drug Administration (FDA):
      • PAH migration limits for food packaging materials follow strict guidelines under 21 CFR 175.300, with thresholds for no detectable levels in food.

China

GB Standards for Food Packaging:

      • Maximum PAH levels: 10 µg/kg in food-contact materials.
      • Emphasis on regulating recycled paper and ink-based packaging for food safety.

Japan

Food Sanitation Act:

    • Strict limits on PAH migration from food packaging materials.
    • Regular testing for compliance with food safety standards.

Canada

Canadian Environmental Protection Act (CEPA):

        • Limits PAHs in air emissions and wastewater discharges.
        • Sets safety thresholds for PAH presence in industrial chemicals and consumer goods.

Australia

National Industrial Chemicals Notification and Assessment Scheme (NICNAS):

      • Regulates PAHs in industrial formulations and consumer products.
      • Limits focus on contamination in oils, fuels, and environmental discharges.