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Triarylmethane dyes on polymer film as optical sensors of atmospheric sulphur dioxide

100%

Szymanski T., Douglas P., Buczkowski R., Buszewski B.

Polish Journal of Environmental Studies

1995

tom 04

nr 2

A new method of atmospheric sulphur dioxide determination based on the reaction of sulphite ions with triarylmethane dye on polymer film has been developed. The addition of sulphite to aqueous solutions of triarylmethane dyes causes bleaching of the dye by formation of the sulphite complex. On the polymer film different aspects of the reaction such as the type of polymer, polymer film thickness, and atmospheric sulphur dioxide concentration have been studied. It was found that the process of diffusion has great influence on the reaction rate. That is why the most important thing for optimizing reaction conditions is choosing the polymer and plasticizer.

Orientation of chlorophyll a and chlorophyll b oligomers inuniaxially and biaxially [SKEW] stretched polymer films

84%

Zelent B., Goc J., Leblanc R. M.

Current Topics in Biophysics

1993

tom 17

nr 1-2

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The effectiveness of synthetic polymers in reducing imbibitional chilling stress in germinating bean seeds

67%

Kwiatkowski J., Prokop M.

Acta Agrophysica

2015

tom 22

nr 1

The effectiveness of hydrophobic synthetic polymers in reducing imbibitional chilling stress in germinating bean seeds was evaluated. Two technical polymers and three Polish snap bean cultivars were analysed. Polymers were applied in amounts corresponding to 3.5% of seed weight. In the imbibitional chilling tolerance test, the seeds were rolled up in wet filter paper and left at 5°C for 72 hours, after which they were germinated at 20°C. The seed imbibition rate, germination energy, germination capacity and mean germination time were determined. The poly-mer coatings applied formed a barrier which slowed down seed imbibition, but it also significantly reduced germination energy and led to a decrease in germination capacity. The extent to which imbibitional chilling stress was mitigated was determined by the type of the polymer applied and the bean genotype analysed.

Ograniczanie wyników

1 Acta Agrophysica

1 Current Topics in Biophysics

1 Polish Journal of Environmental Studies

1 Buczkowski R.

1 Buszewski B.

1 Douglas P.

1 Goc J.

1 Kwiatkowski J.

1 Leblanc R. M.

1 Prokop M.

1 Szymanski T.

1 Zelent B.

1 2015

1 1995

1 1993

Wyniki wyszukiwania

Triarylmethane dyes on polymer film as optical sensors of atmospheric sulphur dioxide

Orientation of chlorophyll a and chlorophyll b oligomers inuniaxially and biaxially [SKEW] stretched polymer films

The effectiveness of synthetic polymers in reducing imbibitional chilling stress in germinating bean seeds