DEGRADATION OF ¹⁴C-MALEIC HYDRAZIDE IN SOIL AS INFLUENCED BY ADSORPTION ON ACTIVATED CARBON = DEGRADATION DE L'HYDRAZIDE MALEIQUE-¹⁴C DANS LE SOL EN RELATION AVEC L'ADSORPTION SUR CHARBON ACTIFHELWEG A.1975; WEED RES.; G.B.; DA. 1975; VOL. 15; NO 2; PP. 129-133; ABS. FR. ALLEM.; BIBL. 9 REF.Article

DEGRADATION OF ¹⁴C-LABELLED MALEIC HYDRAZIDE IN SOIL AS INFLUENCED BY STERILIZATION, CONCENTRATION AND PRETREATMENT = DEGRADATION DE L'HYDRAZIDE MALEIQUE MARQUE AU ¹⁴C SOUS L'INFLUENCE DE LA STERILISATION, DE LA CONCENTRATION ET D'UN PRETRAITEMENTHELWEG A.1975; WEED RES.; G.B.; DA. 1975; VOL. 15; NO 1; PP. 53-58; ABS. FR. ALLEM.; BIBL. 22 REF.Article

INFLUENCE OF THE FUNGICIDE IPRODIONE ON RESPIRATION, AMMONIFICATION AND NITRIFICATION IN SOILHELWEG A.1983; PEDOBIOLOGIA; ISSN 0031-4056; DDR; DA. 1983; VOL. 25; NO 2; PP. 87-92; BIBL. 8 REF.Article

Microbial activities in soil from orchards regularly treated with pesticides compared to the activity in soils without pesticides (organically cultivated)HELWEG, A.Pedobiologia (Jena). 1988, Vol 32, Num 5-6, pp 273-281, issn 0031-4056Article

INDFLYDELSE AF JORDDESINFEKTION MED METHYLBROMID PA INDHOLDET AF BROMID I JORD OG PLANTER = INFLUENCE DE LA FUMIGATION DU SOL AVEC DU BROMURE DE METHYLE SUR LA TENEUR EN BROMURE DU SOL ET DE LA LAITUEHELWEG A; RASMUSSEN AN.1982; TIDSSKR. PLANT.; ISSN 0040-7135; DNK; DA. 1982; VOL. 86; NO 5; PP. 461-469; ABS. FRE/ENG; BIBL. 14 REF.Article

8th symposium on the chemistry and fate of modern pesticides, Copenhagen, Denmark, 21-24 August 2001HELWEG, A.Journal of chromatography. 2002, Vol 957, Num 1, issn 0021-9673, 89 p.Conference Proceedings

Pesticides : degradation and transportHELWEG, A.Developments in environmental modelling. 1991, Vol 18, pp 197-210, issn 0167-8892Article

Degradation and adsorption of ¹⁴C-MCPA in soil-influence of concentration, temperature and moisture content on degradationHELWEG, A.Weed research (Print). 1987, Vol 27, Num 4, pp 287-296, issn 0043-1737Article

Degradation and adsorption of ¹⁴C-mecoprop (MCPP) in surface soils and in subsoil. Influence of temperature, moisture content, sterilization and concentration on degradationHELWEG, A.Science of the total environment. 1993, Vol 132, Num 2-3, pp 229-241, issn 0048-9697Conference Paper

Analysing fluorobenzoate tracers in groundwater samples using liquid chromatography-tandem mass spectrometry: A tool for leaching studies and hydrologyJUHLER, René K; MORTENSEN, Annette P.Journal of chromatography. 2002, Vol 957, Num 1, pp 11-16, issn 0021-9673Conference Paper

Environmental water monitoring by capillary electrophoresis and result comparison with solvent chemistry techniquesSIREN, Heli; VÄNTSI, Sirpa.Journal of chromatography. 2002, Vol 957, Num 1, pp 17-26, issn 0021-9673Conference Paper

Adsorption and ED₅₀ values of five soil-applied herbicidesPEDERSEN, H. J; KUDSK, P; HELWEG, A et al.Pesticide science. 1995, Vol 44, Num 2, pp 131-136, issn 0031-613XArticle

Degradation of mecoprop at different concentrations in surface and sub-surface soilREFFSTRUP, T. K; SØRENSEN, H; HELWEG, A et al.Pesticide science. 1998, Vol 52, Num 2, pp 126-132, issn 0031-613XConference Paper

Degradation of [¹⁴C]ethylenethiourea in surface and subsurface soilJOHANNESEN, H; BECH NIELSEN, A; HELWEG, A et al.Science of the total environment. 1996, Vol 191, Num 3, pp 271-276, issn 0048-9697Article

Accurate mass analysis of ethanesulfonic acid degradates of acetochlor and alachlor using high-performance liquid chromatography and time-of-flight mass spectrometryTHURMAN, E. M; FERRER, Imma; PARRY, Rick et al.Journal of chromatography. 2002, Vol 957, Num 1, pp 3-9, issn 0021-9673Conference Paper

Determination of oxanilic and sulfonic acid metabolites of acetochlor in soils by liquid chromatography-electrospray ionisation mass spectrometryDAGNAC, T; JEANNOT, R; MOUVET, C et al.Journal of chromatography. 2002, Vol 957, Num 1, pp 69-77, issn 0021-9673Conference Paper

Analysis of polar pesticides in rainwater in Denmark by liquid chromatography-tandem mass spectrometryBOSSI, R; VEJRUP, K. V; MOGENSEN, B. B et al.Journal of chromatography. 2002, Vol 957, Num 1, pp 27-36, issn 0021-9673Conference Paper

Some aspects of the analysis of environmental pollutants in sediments using pressurized liquid extraction and gas chromatography-mass spectrometryDABROWSKI, Łukasz; GIERGIELEWICZ-MOZAJSKA, Hanna; BIZIUK, Marek et al.Journal of chromatography. 2002, Vol 957, Num 1, pp 59-67, issn 0021-9673Conference Paper

Liquid chromatography-mass spectrometry method to determine alcohol ethoxylates and alkylamine ethoxylates in soil interstitial water, ground water and surface water samplesKROGH, Kristine A; VEJRUP, Karl V; MOGENSEN, Betty B et al.Journal of chromatography. 2002, Vol 957, Num 1, pp 45-57, issn 0021-9673Conference Paper

Computer-assisted automatic peak recognition and result evaluation for analysis of chlorinated hydrocarbons in environmental samplesXUE, X. Y; ZHANG, Q; LIANG, X. M et al.Journal of chromatography. 2002, Vol 957, Num 1, pp 37-44, issn 0021-9673Conference Paper