Air Pollution Sampling Measurement & Instruction Manual L Mott
TABLE OF CONTENTS How to Establish a Meaningful Air Monitoring Program ..................... 3 Equipment Requirements ........................................................... 3 Establishing a Sampling Site ...................................................... 5 Air Sampling Apparatus: Air Sampling Pump ....................................................................... 7 Instructions ............................................................................... 7 AC Operation.......................
HOW TO ESTABLISH A MEANINGFUL AIR MONITORING PROGRAM To set up a program for monitoring air pollution there are two basic requirements. First, a means of collecting and analyzing the air sample is required. Second, a strategic plan for continuous sampling at a series of logical monitoring sites must be established. The recording of data over a period of time is important in observing the variations that take place at the monitoring sites.
Impinger devices are available in various shapes and sizes. The simplest impinger device consists of a glass vial plus a stopper with a short glass tube and a longer glass tube. The long tube is immersed into the absorbing solution. Other types of impingers are more sophisticated and may meet the specifications set forth by the American Public Health Association or some other regulatory agency. In principle, the inexpensive impingers and the precision impingers operate in a similar fashion.
Some of the reagents require special handling as they are capable of causing skin irritations. No chemical reagent should be taken internally, but if accidentally ingested, heed the antidote label on the bottle and contact a physician immediately. Reagents which are marked poison should be treated as such. Careful handling of all chemicals is a necessary part of chemical testing. Follow all instructions as outlined in the individual directions for each test.
Prior to any field trips, it is necessary to prepare a checklist of the components required for conducting an air pollution study. An inventory of the required chemical reagents should be compiled before taking the unit into the field for testing. The battery capacity for the sampling apparatus should be checked. A supply of reserve batteries might prevent an interruption in the middle of a sampling period. Plan in advance.
AIR SAMPLING APPARATUS AIR SAMPLING PUMP MODEL BD • CODE 1949 The Model BD Air Sampling Pump is designed especially for use with the LaMotte Air Pollution Test Equipment. Among the many features of the air sampling pump are an adjustable flowmeter, intake and exhaust connections, impinger holder, on-off switch, four “C” cell batteries and AC jack. For proper maintenance and to guarantee the life and usefulness of the air sampling pump, the following operating procedures are recommended. INSTRUCTIONS 1.
2. Fill the impinging tube to the designated line with the absorbing solution. Insert stopper assembly, thereby immersing the long tube into the absorbing solution. Attach one end of the flexible tubing to the pump intake fitting. The other end of the tubing is attached to the short outlet tube of the General Purpose Impinger (0922) (Diagram 1). The outlet connection draws air from above the liquid in the impinger chamber.
5. 6. NOTE: To avoid introducing residue or foam into the pump a trap may be constructed by adding an empty impinger to the flexible tubing between the impinging tube with the absorbing solution and the pump intake fitting. Attach the flexible tubing leading from the impinging tube outlet to the intake of the empty impinger. Use an additional length of tubing to attach the outlet tube of the empty impinger to the pump intake fitting. At the end of the sampling period, turn switch to the “OFF” position.
HAND OPERATED SYRINGE PUMP MODEL LG • CODE 1947 This manually operated syringe pump is capable of drawing 50 cc of the test atmosphere through the impinging apparatus by one complete stroke of the syringe. The pumping mechanism relies upon the use of a special check valve which assures that a positive vacuum is formed on the upstroke of the syringe. The check valve also allows the expulsion of the air sample as the plunger is depressed.
At the end of the sampling period, disconnect impinging apparatus and remove from holder. Test the absorbing solution as outlined in the procedures in the individual test kit instructions. devices are being used and whether these devices are operating correctly. Heavy industrial areas contribute significantly to the total air pollution in an area. 5. CONVERSIONS The individual air pollution test sets are calibrated with readouts in parts per million (ppm).
COMBINATION AIR POLLUTION TEST KITS All of the testing methods used in each outfit follow the accepted procedures of the Environmental Protection Agency, which recommends collection of the gas in a special absorbing solution and the subsequent chemical analysis. Through the use of these methods, better quantitative results may be obtained than results acquired by gas indicator tubes or length of stain methods.
INDIVIDUAL AIR POLLUTION TEST KITS Each test set uses a standardized method of analysis and has been adapted for field use. Included are the standardized test reagents, the comparator equipment with permanent color standards, comparator tubes, instructions and case. Inexpensive reagent refill packages are available. Accessory equipment such as impingers and flowmeters are available separately. Sampling pumps are not included in these kits.
GENERAL PRECAUTIONS A. B. C. D. E. F. G. H. I. J. K. L. M. 14 Store in a cool, dry place to prolong reagent shelf life. Read all instructions to familiarize yourself with the test procedure before you begin. Note any precautions in the instructions. Read the label on each LaMotte reagent container prior to use. Some containers include precautionary notices and first aid information. Keep all equipment and reagent chemicals out of the reach of young children.
PACKAGING & DELIVERY Experienced packaging personnel at LaMotte Company assure adequate protection against normal hazards encountered in transportation. After the product leaves the manufacturer, all responsibility for its safe delivery is assured by the transportation company. Damage claims must be filed immediately with the transportation company to receive compensation for damaged goods.
L Mott LaMOTTE COMPANY Helping People Solve Analytical ChallengesSM PO Box 329 • Chestertown • Maryland • 21620 • USA 800-344-3100 • t 410-778-3100 • f 410-778-6394 www.lamotte.com 36022 • 10.
