The Environmental Monitoring Laboratory is a laboratory accredited by IPAC (technical annex nº L0307), according the normative reference EN ISO/IEC 17025: 2005, since 2003-01-07 for 24 technical tests in areas of:

  • Acoustic and vibration - Environmental Noise
  • Outdoor Environmental Air
  • Gaseous Effluents (1)


(1) (1) The Measuring methods, collection and analysis of pollutant emissions, in gaseous emissions, are those determined in art.º 22 do Dec-Lei nº 78/2004, that is, European or national standards.


We work in strait partnership with the Laboratory of Materials Analysis (CTCV – LAM) – Technical Annex nº L0022, responsible by the most of the analytical determinations of the samplings performed by MAS-AMB.

The MAS-AMB is composed by a team with high experience and “Know-how” that dedicates to environmental characterization mostly of industrial companies but also of other economics sectors.

We make samplings and characterization of pollutants throughout the country.



The DL 78/2004, established the system of prevention and control of emissions of atmospheric pollutants, establishing the principles, objectives and instruments appropriated to assure protection of air natural resources, as well the measures, procedures and obligations of operators of the installations covered, aiming to avoid or reduce to acceptable levels the atmospheric pollutants originated in those installations.


Chapter II of these Law-Decree specifies the specific requirements for emission limit-values of emission (VLE) and monitoring for the atmosphere, that should be complied by installations covered by the same, which include the obligation of: • Compliance with the VLE fixed, by pollutant, in specific regulatory acts, • self-control of emissions to atmosphere subject to VLE, of operator responsibility.

Noise is any unwanted sound, or acoustic energy susceptible to change the physiological or psychological well-being of people. This concept is subjective, since the perception of noise depends of the human being, moment and local, make it harder to determinate the discomfort level.


Currently it is considered a public health problem, being one of the main factors that affect urban environment, contributing in a particular way to the degradation of citizen’s life quality. In Portugal the noise pollution is the major cause of environmental claims.


The Law-Decree nº 9/2007, of 17 of January, defines the General Noise Regulation, establishing a system of prevention and control of noise pollution, aiming at safeguarding human health and well-being of the populations.

The air quality in urban and industrialized zones is one of the environmental issues of greatest concern to population, given their harmful consequences for human health (eg. bronchitis, asthma, allergies, etc.) and for the environment (exeg.. dirt, corrosion).


The hazardous substances which substantially most degrade the air quality are those that remain in the ambient for a long time, before they degrade and with the characteristic of moving at great distances through the air.

Acoustic and vibration – Ambient Noise

Measurement of sound pressure levels. Determination of the average long-term sound-level (*)
Measurement of sound pressure levels. Determination of the equivalent continuous sound level(*)
Measurement of sound pressure levels. Discomfort criterion (*)

Outdoor Environmental Air

Sampling of the PM10 fraction of suspended particles (*)
Sampling of particulate matter fraction PM2.5 (*)
Sampling of Lead in fraction PM10 (*)
Sampling and determination of the mass concentration of CO (*)
PM10 and PM2.5 (ß-Radiation)
NOx - NO2 + NO (Chemiluminescence)
SO2 (UV Fluorescence)
Ozone (UV photometry)

Gaseous Effluents

Determination of velocity and volumetric flow in ducts and chimneys. Reference Method Manual (*)
Determination of moisture content. Reference Method (*)
Determination of oxygen (O2). Paramagnetic Method (*)
Sampling of Particle Content - Reference Method (NP EN 13284) (*)
Sampling of total particles (ISO: 9096) (*)
Determination of carbon monoxide (CO) Reference Method - Non-dispersive IR spectrometry (*)
Determination of oxides of nitrogen (Nox). Chemiluminescence method (*)
Sampling and determination of total organic compounds (TOCs). Ionization of flame. Experimental procedure with analyzer. - Reference Method (*)
Sampling of metals: Sb, As, Cd, Cr, Co, Cu, Pb, Mn, Ni, Ti, V (EN 14385: 2004)
Sampling of heavy metals: Ag, As, Ba, Be, Cd, Co, Cr, Cu, Hg, Mn, Ni, P, Pb, Sb, Se, Tl and Zn (EPA)
Sampling of HF (*)
Sampling of gaseous HCl - Reference Method (*)
Sampling of Sulfur Dioxide. Reference method (*)
Sampling of Hydrogen Sulphide (*)
Sampling of Dioxins and Furans PCDDs / PCDFs in fixed source emissions - Filter / Condenser Method (*)


Following the measurements, the results are presented in a report whose format allows easy interpretation of the results and is in accordance with the requirements of the Portuguese legislation and according to the references EN 15259 and CEN / TS 15675.

Indoor Air Quality

Volatile Organic Compounds
Carbon monoxide
Carbon dioxide
Thermal Comfort (Relative Humidity and Temperature; Wind Speed)

Liquid Effluents

Point-to-point liquid effluent sampling
Samplings composed of liquid effluents

Air Quality

Samplers of air quality (PM10; PM2,5; CO)
Passive samplers
Mobile station of Air Quality Monitoring

Gaseous Effluents

Samplers and Probes for Isokinetic Particle sampling
Gas analyzers with heated line
COV analyzers (FID)

Liquid Effluents

Sampler for composite analysis

Environmental Noise

Sound level meter

*Accredited test by IPAC (see technical annex nº LO307)


Obs: If you don’t find the parameter you want to measure in these list, contact us, because in addition to these tests, we performed others, through consultation. These tests are not accredited, but; follow the methods and requirements imposed by our Internal Quality System.




Susana Rodrigues
T. +351 239499213 | Tm. +351 961346920