Aniline and Ammonia at Buffalo Color Mark Witinski
Aniline and Ammonia at Buffalo Color Mark Witinski George Tulevski Rick Nichols Dave Seymour
Buffalo Color Corporation Located on Lee St. and South Park Rd. n Good standing in the Seneca Babcock community. n Produces various dyes. n Sole producer of indigo dye in North America. n
Aniline n Aniline/Benzeneamine (C 6 H 5 NH 2) is essential in the production of indigo. – Semi-volatile organic – Moderate irritant and toxin – Proven to cause cancer in lab animals – Decomposed rapidly by light (t 1/2=6 hrs. )
Ammonia (NH 3) n Emitted from plant as by-product of production – Severe irritant of eyes, skin, throat – Prolonged exposure may cause serious respiratory problems
Sample Collection Design Blank Sample Offices Plant Lee Street Please note photos of this site found at: http: //www. acsu. buffalo. edu/~gardella/sbtour. htm
Sampling Method: Aniline NIOSH Method No. P&Cam 127. n Useful Range 1 -10 ppm. n Equipment n – Personal Sampling Pumps (5) – Tygon tubing – Silica Gel Sampling Tubes (9)
Pumps calibrated to approx. 1 L/min flow rate. n Operated for 20 minutes. n Sample tubes were capped and stored on dry ice. n Workup conducted same day n – Extracted with ethanol – Placed in GCMS
Sampling Method: Ammonia NIOSH Method P&Cam No. 205. n Useful range. 20 mg-1. 6 mg NH 3 per 20 L air. n Equipment n – Personal air sampling pumps (5) – Impinger (4) – Volumetric flasks (5) –. 1 M sulfuric acid – UV/Vis instrument – Nessler reagent
Impinger connected to pump using tubing. n 20 L air pulled through impinger containing 100 m. L sulfuric acid. n Acid containing NH 3 poured into volumetric flask. n. 10 m. L Nessler added to each sample n Samples put in cuvettes and ran through UV/Vis n
Calibration: Aniline
Results: Aniline No detectable Aniline in any of nine samples n Possible Reasons: n – No aniline emission from factory – Aniline experiences rapid photodegradation n OSHA exposure limit: 5 ppm – IDLH: 100 ppm
Calibration: Ammonia
Results: Ammonia At hydrant no detectable ammonia n At bus stop 1. 242 ppm detected n At flagpole. 039 ppm detected n Blank Sample (2 blocks away outside wind path) -- no ammonia detected n
Ammonia Conclusions Levels not considered dangerous n OSHA Standards: 50 ppm exposure limit n – IDLH: 300 ppm n Possible reasons for no detection at hydrant – Smokestack high with hydrant close by (approx. 50 M)
References OSHA Code of Federal Regulations (29, 1910. 1000) n NIOSH Methods n – No. P&Cam 127 – No. P&Cam 205
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