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The effect of the electromagnetic field and 0.0-diethyl-0-1-(2,4-dichlorphenyl)-2-bromovinylphosphate and 0,0-dimethyl-0-1-(2,4-dichlorphenyl)-2-bromovinylphosphate on the survival of Balantidium coli (Malmsten)

100%

Rostkowska J., Sokol E., Pater J.

Wiadomości Parazytologiczne

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1979

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tom 25

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nr 3

2

Activity of dehydrogenases in clay soil exposed to quaternary ammonium salts with iodine anion

100%

Telesinski A., Pawlowska B., Biczak R., Pater J.

Polish Journal of Soil Science

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2017

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tom 50

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nr 2

The aim of the research was to compare the effects of four to quaternary ammonium salts (QAS) with iodine anion: tetramethylammonium iodine [TMA][I], tetraethylammonium iodine [TEA][I], tetrapropylammonium iodine [TEA][I], tetrabutylammonium iodine [TBA][I]. The experiment was carried out on sandy clay loam samples with organic carbon content of 33.82 g·kg⁻¹, and pH in 1 M KCl 7.13. QAS were added to soil at the dosages of: 0, 10, 100, and 1000 mg·kg⁻¹. Activity of dehydrogenases was assayed on days: 1, 14, 35, and 70. Obtained results have shown that the soil treatment with quaternary ammonium salts with iodine anion caused decrease in activity of dehydrogenases. This inhibition increased with increase of QAS dosages, and increase with alkyl chains in cations. Analysis of variance η² indicated, that type of QAS had the biggest impact on formation of activity of dehydrogenases in soil.

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The role of anion in the impact of tetraethylammonium salts on soil phosphatase activities

88%

Telesinski A., Pawlowska B., Pater J., Biczak R., Snioszek M.

Ecological Questions

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2017

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tom 28

Quaternary ammonium salts (QAS) are increasingly commonly used in the chemical industry. The diverse usage of these compounds results in high possibility of their penetration to the environment. The aim of this study was to compare the effect of three salts with tetraethylammonium cation with different anions such as chloride [TEA][Cl], bromide [TEA][Br], and iodine [TEA][I] on the activity of phosphatases in loamy sand. Organic carbon and total nitrogen content in the soil were 8.71 and 0.97 g·kg-1, respectively. The salts were applied to soil at doses of 0, 0.05, 0.50, and 5.00 mmol·kg-1. The samples were adjusted to 60% maximum water holding capacity, and they were incubated at a temperature of 20°C. Activities of acid phosphomonoesterase, alkaline phopshomonoesterase, phosphotriesterase, and inorganic pyrophosphatase were assayed on day 1, 7, 14, 28, 56, and 112. The obtained results demonstrated that the presence of [TEA] in the soil at the low dose (0.05 mmol·kg-1) may stimulate the activity of soil phosphatases. Higher doses of the soil had mostly inhibitory effect on phosphatases activity. Among the determined enzymes, phosphomonoesterases were the most sensitive to salts containing [TEA] cation. A considerable contribution of the anion type on the formation of activity of the determined enzymes of phosphorus compound changes. The strongest effect characterized tetraethylammonium bromide [TEA][Br].

4

Europa kolo Rawicza

87%

Chojnacki W., Busz A., Pater J.

Mięso

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2001

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nr 02

9-11

Ograniczanie wyników

1 Ecological Questions

1 Mięso

1 Polish Journal of Soil Science

1 Wiadomości Parazytologiczne

4 Pater J.

2 Biczak R.

2 Pawlowska B.

2 Telesinski A.

1 Busz A.

1 Chojnacki W.

1 Rostkowska J.

1 Snioszek M.

1 Sokol E.

2 2017

1 2001

1 1979

The effect of the electromagnetic field and 0.0-diethyl-0-1-(2,4-dichlorphenyl)-2-bromovinylphosphate and 0,0-dimethyl-0-1-(2,4-dichlorphenyl)-2-bromovinylphosphate on the survival of Balantidium coli (Malmsten)

Activity of dehydrogenases in clay soil exposed to quaternary ammonium salts with iodine anion

The role of anion in the impact of tetraethylammonium salts on soil phosphatase activities

Europa kolo Rawicza