RISK ASSESSMENT AND MONITORING OF ENVIRONMENTAL CHEMICALS

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RISK ASSESSMENTANDMONITORING OF ENVIRONMENTAL
CHEMICALS

• CORAZON VIDAD
• Philippines

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I. PURPOSE FOR ATTENDING THIS COURSE

• Learn about risk assessment technology for
  environmental contaminants and their impact
• Learn the principles and techniques for
  monitoring of environmental chemicals detected
  from environmental resources and agricultural
  products
• Gain analytical techniques and skills in
  instrument and immunoassay methods.

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II. What you have studied mainly on
environmental science and technology in this
course?
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Collection of samples

• Soil
• River water
• Soil gas
• Particulate matter

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Sample preparation procedures

• Extraction
• Filtration
• Column chromatography
• Evaporation
• Homogenization
• Solid phase extraction
• Liquid-liquid extraction
• Centrifugation

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Analysis of Samples

• SOIL
• SEDIMENT

GC/MSIon trap type
Residue analysis of herbicides
Measurement of ATP Content
Luminometer
Colorimetric
Rapid analysis of soil
Heavy Metal Cu, Zn, Cd
Atomic absorption ICP
Polychlorinated biphenyls
GC-ECD
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• WATER
• Tap
• River
• Pond
• Agricultural
• Treated
• Domestic
• Wastewater

pH EC DO COD PO4-P
Pack Test
NO3
RQ Flex
NO3 NO2 Cl SO4
Ion Chromatograph

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• WATER

HPLC ELISA Kit
Analysis of surfactants (LAS)
Heavy metals Cd, Pb, As
Atomic Absorption
Boron
UV-VIS Spectrophotometer
Toxic substances Phenol Free cyanide
Ammonium
Pack Test
Potassium Permanganate Consumption
Chemical Oxygen Demand
Total hardness
Titration
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WATER
Recovery of 5 pesticides
GC/MS
Endocrine Disrupting Chemicals 17B
Estradiol Bisphenol A Alachlor
ELISA
ELISA Kit
ELISA Kit HPLC
Volatile organic compounds
GC/MS Head Space Method
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• VEGETABLES
• Komatuna
• Spinach
• Paprika
• Corn
• Cucumber
• Okra
• Beans
• Paprika

NO3 concentration
RQ Flex
Recovery test Of 5 pesticides
GC/MS
GC/MS
Multi-residue Analysis of 229 pesticides
LC/MS
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• AIR
• PLASTIC TOY

Detection tube (screening) GC/MS Or GC-Photo
Ionization Detector
VOC
Soil pore air
Particulate Matter
Measurement of PM10
Low Volume Sampler
Potassium Permanganate Consumption
Chemical Oxygen Demand
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III. WHICH SUBJECT MOST USEFUL TO SOLVE
ENVIRONMENTAL PROBLEMS IN YOUR COUNTRY?
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Solid Waste Management in Japan
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(No Transcript)
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Society capable of Sustainable growth
Creating harmony With economy and nature
DEVELOPMENT THAT MEETS THE NEEDS OF THE PRESENT
W/O COMPROMISING THE ABILITY OF FUTURE GENERATION
TO MEET THEIR OWN NEEDS
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Ecological Solid Waste Management Act of 2002
National Solid Waste Management Commission
National Ecology Center
Provincial Solid Waste Management Board
City/Municipal Waste Management Board
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CALABARZON REGION Total land area
1,622,861 hectares Total number
of municipalities 142 Total number of
cities 10 Population (2001)
10,782,607
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• 2001 2004 2006

Open Dumps
Controlled Dump
Sanitary Landfill
3 sites with Environmental Compliance
Certificate
88 open dumps
27 proposed sites
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IV. ACTION PLAN

• Make a feed back report to Regional Director, and
  submit report to National Economic Development
  Authority
• Expand and improve the monitoring of drinking
  water quality

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ACTION PLAN

• Make proposal Philippine National Standards on
  Drinking Water Revision Committee to
• Widen the scope of monitoring to include the
  standards for total trihalomethane, VOCs, surface
  active agents, and disinfectant by-products

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ACTION PLAN

• To identify critical areas where activities are
  potential sources of contamination of
  groundwater, through coordination with
  Environment Department
• Prioritization of identified sites based on the
  nature/type of industry, proximity to waste
  dumping sites, presence of groundwater source and
  number of households using the water facility

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ACTION PLAN

• In areas identified to be high risk for
  contamination, to evaluate other parameters not
  listed in the Philippine National Standards for
  Drinking Water that may have endocrine effects
• Preparation of drinking water quality monitoring
  plan by province.

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ACTION PLAN

• Proposed upgrading/improvement of existing
  government water laboratories.
• Inventory of water laboratory instruments and
  training needs assessment of laboratory
  personnel
• To prepare budgetary requirements, and make
  necessary requests, solicit donations from
  private entities and non-government
  organizations,

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ACTION PLAN

• Capability building of laboratory personnel, to
  use ELISA technique and other methods required
  based on the availability of instruments.
  Preparation of training modules and conduct of
  practical trainings will be done through
  coordination with DOH East Avenue Memorial
  Medical Center National Reference Laboratory.

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ACTION PLAN

• Establish networking with other agencies through
  Regional Inter-Agency Committee on Environmental
  Health in the analysis of samples requiring
  sensitive analytical instruments, e.g. for
  pesticides Department of Agriculture -
  Pesticides Analytical Laboratory, metal ions,
  VOCs DENR/EMB.

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ACTION PLAN

• To recommend to the Regional Health Director,
  provincial governors/ provincial health officers
  to subject all private water laboratories
  analyzing bottled water and product water from
  water refilling stations to undergo external
  proficiency tests. Proficiency test will be
  conducted by DOH National Reference Laboratory or
  any reputable private analytical laboratory
  recommended by DOH Central Office.

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ACTION PLAN

• To purchase basic instruments and glassware,
  reagents and supplies necessary to implement the
  agreed monitoring plans
• In the absence of highly sensitive analytical
  instruments such as GC/MS, HPLC, to make use of
  simplified water inspection products for
  screening tests on Al, As, B, Ca, chloride,
  residual chlorine, free cyanide, Cr6, Cu, F, Fe,
  formaldehyde, , Mg, Mn, NO3, NO2, pH, phenol,
  total hardness, Zn,

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ACTION PLAN

• To recommend the use of enzyme linked
  immunoassay kits in evaluating compounds which
  have endocrine effect such as estrogen, compounds
  which are used as raw materials for surfactants
  (bisphenol A, LAS), organochlorine compounds with
  thermal properties (PCBs) and other agricultural
  chemicals with known toxicities (Alachlor,
  Atrazine).

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Domo Arigato Gozaimasu !!!