Dissertation > Excellent graduate degree dissertation topics show

Measurement of Soluble Antimony in Water by Diffusive Gradient in Thin Films Technique with Different Liquid Binding Phases

Author: WuDanDan
Tutor: WangYi
School: Northeastern University
Course: Chemical Engineering
Keywords: Diffusive gradients in thin-films antimony trace heavy metal measurement
CLC: X832
Type: Master's thesis
Year: 2011
Downloads: 45
Quote: 0
Read: Download Dissertation

Abstract


The diffusive gradients in thin-films (DGT) is a technique that has been used to the measurement of labile metals in waters, soils and sediments. The DGT sampler has several advantages over other techniques proposed for measuring metals in natural waters:(a) it can measure trace metals; (b) the device is easy to use and concentrates metals in situ; (c) it yields time-averaged concentrations over the length of the deployment period; (d) it can not measure all metal species but those species that can be accumulated by the DGT binding phase and pass through the DGT diffusive layer.This study is about the measurement of plumbum by DGT mechanisms with two different liquid binding phases, these binding phases are polyacrylic acid sodium (PAAS) and poly(4-styrenesulfonate) (PSS). DGT devices do not measure all the chemical species of a metal in solutions. It only measures those species that can be accumulated by the DGT binding phase which is one of the advantages for DGT.In this article, the following experiments were carried out at room temperature.First phase were determined by combining the two aqueous PAAS and PSS Sb(Ⅲ) ion diffusion coefficient and the cumulative capacity, Second, the bulk solution investigated the acidity and ionic strength on CDM PAAS DGT and CDM PSS DGT antimony in the ability of water accumulation; Finally, the subject of measuring the real plus of heavy metals in natural waters the concentration of the effective state of antimony.The results showed that 0.0030 mol·L-1 PAAS as binding phase liquid,measurement of the preparation of water recovery can be achieved Sb(Ⅲ) 91.91%, The device of CDM-PAAS-DGT had the the strong ability to bond labile Sb(Ⅲ) in the water, That polyacrylic acid sodium (PAAS) solution can be accumulated the Sb(Ⅲ) in water as a new binding phase liquid of DGT; And 0.020 mol·L-1 PSS as liquid binding phase, The recovery rate only reached 84.18%, The results do not meet with the corresponding one of the conditions for the DGT technology, and revealed that poly(4-styrenesulfonate) (PSS) is ineffective as a binding phase, so poly(4-styrenesulfonate) (PSS) is not suitable accumulated the Sb(III) in water as a new binding phase liquid of DGT.

Related Dissertations

  1. Research on Optical Surface Testing with Interferometers,TG84
  2. Research on the Technology of Measurement and Error Evaluation of Gear Hob,TG721
  3. High Speed Frequency Measurment and Non-Linearity Correction of Frequency Modulated Capacitive Displacement Sensor,TH822
  4. Research on Temperature Measurement Technique Based on CCD Image Sensor,TH811
  5. Research on Signal Receiving System of Phase Laser Range Finder,TN249
  6. Research on Visual Measurement for Spacecraft Rendezvous and Approach,TP391.41
  7. Modeling Internet Link Delay Based on Measurement,TP393.4
  8. Study on Development of College Students’ Brand Attachment Questionnair and Its Relationship Witn Their Self-Concept,B841
  9. Coal miners and practice unsafe behavior measurement,X936
  10. An Empirical Study of Measurement of the Competitiveness of Private Enterprises,F224
  11. Attribute Reduction of Interval-valued Information System Based on Fuzzy Discernibility Matrix,O159
  12. Research on a New Helical Cone Grinding Theory and Cutter Grinding Machine,TG596
  13. Study on Assessment of Urban-Rural Coordinating Development Level in Daqing,F224
  14. Campus Network Management Flow Analysis Technology Research and Implementation,TP393.06
  15. Research on Accounting of Chinese Emission Permits Trading,X196
  16. The Reaching of the Problem of Our Listed Companies Disclosure,F233
  17. Remote Corrosion Monitoring System of Concrete Structures,TU375
  18. Research on Intelligentizing of High Voltage Equipment in Smart Power Station,TM76
  19. Numerical Analysis of Pre-charge and Turn-on Process and Voltage Measurement of RSD,TN323.6
  20. Some Research on Mechanical Fault Diagnosis with Bayesian Network,TP18
  21. Experimental Investigation on Thermal Contact Resistance of Solid Interface between Cu and AlN at Low Temperature,TB302

CLC: > Environmental science, safety science > Environmental Quality Assessment and Environmental Monitoring > Environmental monitoring > Water quality monitoring
© 2012 www.DissertationTopic.Net  Mobile