Ambient Air quality Monitoring Guidlines. - Maharashtra Pollution ...

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integral part of the apparatus, or an external calibrated cylinder, with appropriate dilution if necessary, may be used. The described span check system is suitable for <strong>quality</strong> control in routine operation to verify that the analyser is operating correctly, but may not be suitable for proper calibration as described in 5.5.1. The span check system should regularly be compared to a laboratory-based calibration system as described in 5.4.1. 6.0 APPARATUS 6.1 Description Figure 1 shows the schematic of an analyser for measuring SO2 by UV fluorescence. The main components are described below. 6.2 Selective Traps for Interfering Agents One or more selective traps should be used before the reaction chamber to remove interfering gases such as aromatic hydrocarbons. These selective traps shall not retain any SO2 and shall be changed in accordance with manufacturers instruction manual. If high concentrations of H2S are expected in the ambient air, a selective scrubber should be used. 6.3 Optical Assembly and Fluorescence Cell The UV lamp emission may be pulsed electronically or mechanically for synchronous detection and amplification of the signal. The lamp shall have a stabilised power supply to ensure a stable emission of light. An optical filter is used to restrict the wavelengths to a range, which allows excitation of the SO2 molecule and yet minimise the interference of water vapour, aromatic hydrocarbons or nitric oxide. The UV detector, for example, the photomultiplier tube, detects the fluoroscence light emitted by the SO2 molecules in the reaction chamber. A selective optical filter placed in front of the UV detector, reduces the signal due to scattering of the incident light. The reaction chamber shall be made of material inert to SO2 and UV radiation. The cell should be heated above the dew point to avoid water condensation, and temperature fluctuations. The optical trap of the chamber prevents reflection of the exciting UV radiation. The optical assembly should be placed in a heated enclosure. 100
UV LAMP SAMPLE SAMPLE INLET FILTER MODULATOR SELECTIVE TRAPS FOR INTERFERING AGENTS OPTICAL INLET FILTER OPTICAL OUTLET FILTER PHOTOMULTIPLIER TUBE SYNCHRONOUS ELECTRONIC AMPLIFICATION SO2 (10 6 V/V ) 100 SO2 REACTION CHAMBER OPTICAL TRAP PUMP COMPENSATION PRESSURE FLOW RATE EXHAUST FIG : 1 SCHEMATIC DIAGRAM OF A UV FLUORESCENCE SO2 ANALYSER
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1.0 INTRODUCTION Air pollutants are
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The Central Pollution Control Board
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S.No. Problem Area Type of Industry
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(viii) High population exodus to th
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a) Seasonal Variation in Carbon Mon
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Concentration (µg/m 3 ) 2.2.3 Long
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3.2 National Air Monitoring Program
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Number of Monitoring Stations 40 35
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4.0 GUIDELINES FOR MONITORING For s
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The variability of pollutant concen
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areas, traffic intersections etc. O
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Station Type Description Type C Res
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available then monitoring of specif
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manpower and needs to be calibrated
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averaging should be done and plotte
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necessary to readjust the position
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5.0 QUALITY ASSURANCE AND QUALITY C
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(a) Inter Laboratory Proficiency Te
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2. Infrastructure for conducting In
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ZERO GAS VALVE PRESSURE REGULATOR (
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is to assess its ability to perform
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The mixing ratio of O3 (ppb) must n
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(vi) Lack of Dedicated Manpower If
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Site staff must be trained so that
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NATIONAL AMBIENT AIR QUALITY MONITO
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Delhi - 110 032 e-mail : cpcb@alpha
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FOREWORD Under the Air (Prevention
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Table No. References 161 LIST OF TA
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3.0 INTRODUCTION Air pollutants are
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The Central Pollution Control Board
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S.No. Problem Area Type of Industry
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(viii) High population exodus to th
Page 66 and 67:
Monthly average of CO measured at B
Page 68 and 69:
Concentration (µg/m 3 ) 2.2.3 Long
Page 70 and 71:
3.2 National Air Monitoring Program
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Number of Monitoring Stations 40 35
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4.0 GUIDELINES FOR MONITORING For s
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The data requirements, which are re
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their levels and determine trends.
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Station Type Description traffic vo
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Criteria for SO2 Measurements Sourc
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calibration parameters change. Meas
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The following must be followed for
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changed in inclement weather. Set t
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5.0 QUALITY ASSURANCE AND QUALITY C
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(a) Inter Laboratory Proficiency Te
Page 94 and 95:
The primary requirement for conduct
Page 96 and 97:
ZERO GAS VALVE PRESSURE REGULATOR (
Page 98 and 99:
is to assess its ability to perform
Page 100 and 101:
The mixing ratio of O3 (ppb) must n
Page 102 and 103:
(xiii) Lack of Dedicated Manpower I
Page 104 and 105:
laboratory staff must be trained so
Page 106 and 107: 1. AIR SAMPLING - GASEOUS 1.0 TITLE
Page 108 and 109: 52 Fig. 1 Sampling Train
Page 110 and 111: 54 Fig. 4 Critical Orifice Device
Page 112 and 113: the pollutant and accordingly selec
Page 114 and 115: contracts with change in humidity.
Page 116 and 117: and temperature has been set down i
Page 118 and 119: The impulse frequency emitted is pr
Page 120 and 121: CIRCUIT DIAGRAM - 1 64
Page 122 and 123: FIG. 1 (a) CIRCUIT DIAGRAM 66
Page 124 and 125: 3. DETERMINATION OF SUSPENDED PARTI
Page 126 and 127: measurement precision dominates at
Page 128 and 129: 6.4.4 Equilibration Rack - This rac
Page 130 and 131: Receive Filters, inspect (light tab
Page 132 and 133: of the face-plate. Look underneath
Page 134 and 135: Atmosphere". Federal Register, 52 F
Page 136 and 137: 5.0 INTERFERENCES 5.1 Passive Depos
Page 138 and 139: 6.4.4 Numbering Machine - Though fi
Page 140 and 141: chain-of-the custody log-book and o
Page 142 and 143: 5. DETERMINATION OF SULPHUR DIOXIDE
Page 144 and 145: 88 FIG. 1.0 SO2 SAMPLING TRAIN
Page 146 and 147: The wavelength calibration of the i
Page 148 and 149: (ii) The absorbance of the reagent
Page 150 and 151: pipe cleaner after use. If, the tem
Page 152 and 153: (A - Ao) (10 3 ) (B) C = ----------
Page 154 and 155: Then the air sample flows into a re
Page 158 and 159: 6.4 Pressure Regulator The output s
Page 160 and 161: FIG. 2 SCHEMATIC DIAGRAM OF A CALIB
Page 162 and 163: 7. CONTINUOUS MEASUREMENT OF CARBON
Page 164 and 165: 6.0 APPARATUS 6.1 NDIR Analyser - f
Page 166 and 167: BLOWER SAMPLE INLET PORT FOUR WAY V
Page 168 and 169: Maintain the same sample cell flow
Page 170 and 171: 14.0 CALIBRATION PROCEDURE 14.1 Ana
Page 172 and 173: connected to the output manifold, t
Page 174 and 175: FIG. 3 MULTIPLE CYLINDER CALIBRATIO
Page 176 and 177: (Nondispersive Infrared Spectrometr
Page 178 and 179: 5.0 INTERFERENCES 5.1 Nitric oxide
Page 180 and 181: 7.1.6 Air Pump - Capable of maintai
Page 182 and 183: 9.1.3.2 Solution B - Pipet 25 ml of
Page 184 and 185: 9.4.7 A randomly selected 5-10% of
Page 186 and 187: 9. CONTINUOUS MEASUREMENT OF OXIDES
Page 188 and 189: 8.0 APPARATUS 8.1 Chemiluminescene
Page 190 and 191: SAMPLE INLET PUMP AIR DRYER OZONE G
Page 192 and 193: FIG. 3 CALIBRATION SYSTEM COMPONENT
Page 194 and 195: 10.3.1 Flow Conditions - Insure tha
Page 196 and 197: ates constant. For each calibration
Page 198 and 199: 10. DETERMINATION OF OZONE IN THE A
Page 200 and 201: 7.0 APPARATUS 7.1 Sampling Probe -
Page 202 and 203: 9.4 Blank Correction - Measure the
Page 204 and 205: 11. CONTINUOUS MEASUREMENT OF OZONE
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FIG. 1 SCHEMATIC DIAGRAM OF A TYPIC
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8.2 Air Inlet Filter - A Teflon fil
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9.0 REAGENTS 9.1 Purity - All reage
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Where : Ozone Conc.CTA = the ozone
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1. AIR SAMPLING - GASEOUS 1.0 TITLE
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55 Fig. 1 Sampling Train
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57 Fig. 4 Critical Orifice Device
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the pollutant and accordingly selec
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(iii) Technical Data Measuring rang
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3.1.3 Wind Speed Temperature measur
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(v) Preparation for Use (a) Selecti
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CIRCUIT DIAGRAM - 1 67
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FIG. 1 (a) CIRCUIT DIAGRAM 69
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3. DETERMINATION OF SUSPENDED PARTI
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measurement precision dominates at
Page 236 and 237:
6.4.4 Equilibration Rack - This rac
Page 238 and 239:
Receive Filters, inspect (light tab
Page 240 and 241:
of the face-plate. Look underneath
Page 242 and 243:
Atmosphere". Federal Register, 52 F
Page 244 and 245:
5.0 INTERFERENCES 5.1 Passive Depos
Page 246 and 247:
6.4.4 Numbering Machine - Though fi
Page 248 and 249:
chain-of-the custody log-book and o
Page 250 and 251:
5. DETERMINATION OF SULPHUR DIOXIDE
Page 252 and 253:
91 FIG. 1.0 SO2 SAMPLING TRAIN
Page 254 and 255:
The wavelength calibration of the i
Page 256 and 257:
(ii) The absorbance of the reagent
Page 258 and 259:
pipe cleaner after use. If, the tem
Page 260 and 261:
(A - Ao) (10 3 ) (B) C = ----------
Page 262 and 263:
Then the air sample flows into a re
Page 264 and 265:
integral part of the apparatus, or
Page 266 and 267:
6.4 Pressure Regulator The output s
Page 268 and 269:
FIG. 2 SCHEMATIC DIAGRAM OF A CALIB
Page 270 and 271:
7. CONTINUOUS MEASUREMENT OF CARBON
Page 272 and 273:
6.0 APPARATUS 6.2 NDIR Analyser - f
Page 274 and 275:
BLOWER SAMPLE INLET PORT FOUR WAY V
Page 276 and 277:
Maintain the same sample cell flow
Page 278 and 279:
14.0 CALIBRATION PROCEDURE 14.1 Ana
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connected to the output manifold, t
Page 282 and 283:
FIG. 3 MULTIPLE CYLINDER CALIBRATIO
Page 284 and 285:
(Nondispersive Infrared Spectrometr
Page 286 and 287:
5.0 INTERFERENCES 5.1 Nitric oxide
Page 288 and 289:
7.1.6 Air Pump - Capable of maintai
Page 290 and 291:
9.1.3.2 Solution B - Pipet 25 ml of
Page 292 and 293:
9.4.7 A randomly selected 5-10% of
Page 294 and 295:
9. CONTINUOUS MEASUREMENT OF OXIDES
Page 296 and 297:
9.0 APPARATUS 8.1 Chemiluminescene
Page 298 and 299:
SAMPLE INLET PUMP AIR DRYER OZONE G
Page 300 and 301:
FIG. 3 CALIBRATION SYSTEM COMPONENT
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10.6.1 Flow Conditions - Insure tha
Page 304 and 305:
ates constant. For each calibration
Page 306 and 307:
10. DETERMINATION OF OZONE IN THE A
Page 308 and 309:
7.0 APPARATUS 7.1 Sampling Probe -
Page 310 and 311:
9.4 Blank Correction - Measure the
Page 312 and 313:
11. CONTINUOUS MEASUREMENT OF OZONE
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FIG. 1 SCHEMATIC DIAGRAM OF A TYPIC
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8.2 Air Inlet Filter - A Teflon fil
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9.0 REAGENTS 9.3 Purity - All reage
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Where : Ozone Conc.CTA = the ozone
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