With the implementation of IMO 2020 guidelines, the maritime sector began adopting strict measures to reduce sulfur oxide (SOx) emissions. Additionally, vessels operating in waters under United States jurisdiction must also comply with the requirements of the Vessel General Permit (VGP).

To meet these regulations, ships must operate using low-sulfur fuels. Alternatively, the use of higher-sulfur fuels is permitted if the vessel is equipped with an Exhaust Gas Cleaning System (EGCS), commonly known as a scrubber. This system uses seawater to wash exhaust gases, significantly reducing the levels of sulfur dioxide released into the atmosphere.

However, the water used in this process — known as scrubber water — is later discharged into the ocean and must therefore meet specific pollutant concentration limits to protect the marine environment.

Lan Maritime Lab performs scrubber water sampling and analysis in accordance with EPA or ISO guidelines. The main parameters analyzed include:

• Heavy metals: Cadmium (Cd), Copper (Cu), Nickel (Ni), Lead (Pb), Zinc (Zn), Arsenic (As), Chromium (Cr), Vanadium (V)
• Organic compounds: Polycyclic Aromatic Hydrocarbons (PAHs), Total Petroleum Hydrocarbons (TPH)
• Nutrients and byproducts: Nitrate, Nitrite, among others

All analyses are conducted by laboratories accredited by Inmetro, ensuring accuracy, traceability, and full reliability of the results.