+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Paper substrate room temperature phosphorimetry of polyaromatic hydrocarbons enhanced by surface active agents

Analytical Chemistry 60(5): 416-420
Paper substrate room temperature phosphorimetry of polyaromatic hydrocarbons enhanced by surface active agents
The effect of the presence of surfactants of different character (sodium dodecyl sulfate, sodium decyl sulfate, Brij 35, and dodecyltrimethylammonium chloride) on the paper-substrate room-temperature phosphorescence (PS-RTP) of several polyaromatic hydrocarbons (PAHs) and carbazole was studied. Thallium nitrate was used as heavy-atom perturber. When an anionic surfactant was added or when analytes were spotted from micellar solutions, enhancements of the sensitivity ranging between factors of 2 and 9 were found. On the other hand, the PS-RTP signal was totally quenched in the presence of the cationic surfactant. Similar effects were found for the phosphorescence of the paper background. Absolute limits of detection in the range of 0.2-3 ng were obtained in the presence of sodium dodecyl sulfate. A discussion in the possible mechanisms producing the observed effect is included.

(PDF 0-2 workdays service: $29.90)

Accession: 006059991

PMID: 3369693

Related references

Room-temperature phosphorimetry of polyaromatic hydrocarbons with organized media and paper substrate: A comparative study. Talanta 35(1): 41-46, 1988

Determination of thioguanine in pharmaceutical preparations by paper substrate room temperature phosphorimetry. Analyst 125(7): 1327-1330, 2000

Solid substrate room temperature phosphorescence of purine derivatives enhanced by thallium i ions and a surface active agent. Analytica Chimica Acta 236(2): 257-266, 1990

Room-temperature phosphorimetry of carbaryl in low-background paper. Analytical Chemistry 59(23): 2822-2827, 1987

Investigations of a new sample compartment assembly for low-temperature and room-temperature solid substrate phosphorimetry. Analytical Chemistry 57(7): 1230-1237, 1985

Room-temperature phosphorescence of several polyaromatic hydrocarbons. Talanta 24(2): 146-148, 1977

Study of ph and substrate effects on room-temperature phosphorimetry of some indolecarboxylic acids. Talanta 33(1): 27-33, 1986

Study on five polycyclic aromatic hydrocarbons by chemical deoxygenation micelle-stabilized room temperature phosphorimetry. Microchemical Journal 48(1): 94-103, 1993

Room-temperature phosphorimetry of methylxanthine stimulants on zeolite-modified filter paper substrates. Fresenius' Journal of Analytical Chemistry 346(10-11): 1003-1007, 1993

Determination of indomethacin by room-temperature phosphorimetry on a poly(vinyl alcohol) substrate. Analytical Sciences 18(7): 835-838, 2002