Application of FTIR for Lime Analysis: Training Manual

Details

• Creators:
  Nasrazadani, Seifollah ; Eureste, Esteban
• Corporate Creators:
  University of North Texas
• Corporate Contributors:
  Texas Department of Transportation. Research and Technology Implementation Office ; United States. Department of Transportation. Federal Highway Administration
• Subject/TRT Terms:
  Calcium Oxide Fourier Transforms Infrared Analysis Manuals Slurry Training Waste Disposal Waste Management
• Publication/ Report Number:
  FHWA/TX-08/5-9028-01-P1
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Training Manual: March 2007-February 2008
• Corporate Publisher:
  University of North Texas
• Abstract:
  TxDOT currently uses the titration method for the quantitative analysis of lime samples. The titration method is time consuming (hours if not an entire day is spent for each analysis) and it is not an accurate test due to chemical interferences and sample preparation variances. In addition, the titration method consumes chemicals that are costly and add to hazardous waste inventory. On the other hand, lime and its related materials absorb Infrared rays and exhibit their fingerprint spectra that are free of spectral interferences. In this implementation project, application of Fourier Transform Infrared spectroscopy (FTIR) was investigated for rapid and accurate quantitative analysis of lime from three forms including quick lime, hydrated lime and slurry lime. Calibration curves relating absorption relative intensities of lime-to-lime concentrations (for both quicklime and slurry lime samples) were generated that showed R2 = 0.88 and will be utilized to quantify lime content of an unknown sample. Sample preparation method for different forms of lime is discussed and precautions to consider for interference avoidance are discussed. Results indicated that FTIR is a safe and straightforward method that requires minimal operator training and expertise. Finally, a testing protocol for lime quantification using FTIR was developed.
• Format:
  PDF
• Funding:
  5-9028-01
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:0ac9570eaccb9275a64e38b5bbc072f8deb1fdd2355ab63b10d86021824d40bafc7bd6486a187521e8bb31787691039b1a8bb94d74f2143da904c730b8747544
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/86542/dot_86542_DS1.pdf
• File Type:
  [PDF - 549.98 KB ]