PMID- 11382023
OWN - NLM
STAT- MEDLINE
DCOM- 20010614
LR  - 20191025
IS  - 1093-4529 (Print)
IS  - 1093-4529 (Linking)
VI  - 36
IP  - 2
DP  - 2001
TI  - The effect of surfactants on the deliquescence of sodium chloride.
PG  - 229-42
AB  - This study investigated the deliquescence of sodium chloride aerosol with 
      surfactants at a retention time of 4.24 sec. Two surfactants used in this study, 
      glutaric acid and pyruvic acid, are found in atmospheric aerosol and have a high 
      hydrophile-lipophile balance (HLB) value. The experimental system consisted of a 
      relative humidity conditioner, a tandem differential mobility analyzer (TDMA) and 
      a scanning mobility particle sizing (SMPS) system. Results obtained from the 
      observation of TDMA presented the deliquescence point of sodium chloride aerosol 
      at 75% RH. In addition, the growth size of sodium chloride aerosol was observed 
      to be 79.47 nm and the growth ratio was 77.94%, when the initial size of aerosol 
      was 101.82 nm. Surfactants were internally mixed with sodium chloride at six 
      different weight fractions, i.e. 2.5, 5, 10, 20, 40, and 60% by weight of 
      surfactants in dry aerosol. Both surfactants apparently decreased the 
      deliquescence point of sodium chloride, in which the lowest deliquescence point 
      appeared at about 71% RH when the weight fraction of surfactants is 60% by weight 
      of surfactants in dry aerosol. Moreover, the smallest size of sodium chloride 
      aerosol with surfactants was 142.7 nm at 60% by weight of pyruvic acid in dry 
      aerosol. Our results further demonstrate that the deliquescence point and size of 
      sodium chloride aerosol with surfactants are related to the weight fraction of 
      surfactants.
FAU - Chen, Y Y
AU  - Chen YY
AD  - Graduate Institute of Environmental Engineering, National Taiwan University, 
      Taipei, Taiwan, 106, R.O.C.
FAU - Lee, W M
AU  - Lee WM
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - England
TA  - J Environ Sci Health A Tox Hazard Subst Environ Eng
JT  - Journal of environmental science and health. Part A, Toxic/hazardous substances & 
      environmental engineering
JID - 9812551
RN  - 0 (Aerosols)
RN  - 0 (Glutarates)
RN  - 0 (Surface-Active Agents)
RN  - 451W47IQ8X (Sodium Chloride)
RN  - 8558G7RUTR (Pyruvic Acid)
RN  - H849F7N00B (glutaric acid)
SB  - IM
MH  - Aerosols
MH  - *Air Pollution
MH  - Glutarates/chemistry
MH  - Particle Size
MH  - Pyruvic Acid/chemistry
MH  - Sodium Chloride/*chemistry
MH  - Surface-Active Agents
EDAT- 2001/05/31 10:00
MHDA- 2001/06/15 10:01
CRDT- 2001/05/31 10:00
PHST- 2001/05/31 10:00 [pubmed]
PHST- 2001/06/15 10:01 [medline]
PHST- 2001/05/31 10:00 [entrez]
AID - 10.1081/ese-100102620 [doi]
PST - ppublish
SO  - J Environ Sci Health A Tox Hazard Subst Environ Eng. 2001;36(2):229-42. doi: 
      10.1081/ese-100102620.