quiz

• Analytes


  • Arsenic
  • Cadmium
  • Lead
  • Nitrate
• Equipment


  • ICP
  • Hydride Generation AAS
  • EAAS
  • FAAS
  • Spectrophotometer
  • Ion Chromatography
  • pH meter
  • Nephelometer
  • Turbidimeter
  • Chlorine meter or kit
  • Gravimetric
• Parameters


  • Color (Apparent)
  • Turbidity
  • pH
  • Total Dissolved Solids
  • Disinfectant Residual (Chlorine)
• Analyte


  The substance being measured or analyzed
• ICP


  Inductively Coupled Plasma
• EAAS


  Electrothermal Atomic Absorption Spectroscopy
• FAAS


  Flame Atomic Absorption Spectroscopy
• NEM


  National Environmental Monitoring
• CRM


  Certified Reference Material
• IC


  Ion Chromatography
• Turbidity


  Reduction in light transmission by particles in suspension
• Disinfectant Residual (Chlorine)


  Remaining chlorine after disinfection
• Visual comparison method


  Comparing sample color to standards
• Nephelometer


  Measures light scattered by particles
• Turbidimeter


  Measures reduction in light transmission by particles
• Gravimetric


  Determining mass by weighing
• Spectrophotometry


  Chemical reaction produces colored substance that absorbs light
• Atomic absorption spectrophotometry


  Measures light absorbed by ground-state atoms
• Fluorometry


  Atoms absorb light of specific wavelength and emit light of longer wavelength
• Chemiluminescence


  Chemical reaction produces light. Oxidation of luminol
• Turbidimetry


  Measures reduction in light transmission by particles in suspension
• Nephlometry


  Similar to turbidity, measures light scattered by particles
• Laury Tryptose Broth (LTB)


  Medium for detecting and enumerating coliforms
• Laury Tryptose Broth (LTB)


  • Tryptose provides nitrogen
  • Lactose is a fermentable sugar
  • Sodium lauryl sulphate inhibits non-coliforms
  • Salts inhibit gram-positive bacteria
  • Sodium chloride maintains osmotic balance
  • Potassium phosphates control pH
  • Positive indole test and gas production at 44°C indicates presence of E. coli
• Head of laboratory


  Competent and experienced professional with specialized skills related to the laboratory category
• Head of laboratory


  • Responsible for operation of entire laboratory, personnel, functions, and data meeting quality assurance and regulatory requirements
• Analyst


  NRL-EOHTM trained with appropriate degree and at least 2 years experience in relevant water testing procedures
• Allowed analyst professionals


  • Registered Medical Technologist
  • Certified Microbiologist
  • Registered Food Technologist
  • Registered Chemist
  • Registered Chemical Technician under supervision of Registered Chemist
• Government LDWA


  Operated and maintained partially or wholly by national, provincial, city, municipal government, or other political unit
• Private LDWA


  Privately owned, established and operated with funds through donation, principal, investment or other means
• Institution based LDWA


  Located within and operates as part of a DOH licensed health facility
• Non-institution based LDWA


  Operates independently and is not attached to any DOH licensed health facility
• LDWA Classifications by Service Capability


  • Microbiological
  • Physico-Chemical
  • Microbiological-Physico-Chemical
• Microbiological LDWA


  • Detects and enumerates coliform organisms (Total coliform, thermotolerant coliforms/E.coli, and HPC) in water samples
• Physico-Chemical LDWA


  • Detects and quantifies at least 9 mandatory physical and chemical parameters (Lead, Nitrate, Arsenic, Cadmium, color, turbidity, disinfectant residual, pH, Total Dissolved Solids)
• Microbiological-Physico-Chemical LDWA


  • Offers services of both Microbiological and Physico-Chemical LDWAs
• LDWA shall have all necessary equipment, reagents and supplies to perform standard methods of analysis based on PNSDW 2017
• LDWA shall maintain detailed records of equipment/instruments such as preventive/corrective maintenance, calibration, damage, malfunction and repair
• LDWA shall maintain an inventory of reagents and supplies with detailed descriptions
• LDWA shall select appropriate analytical methods based on current PNSDW