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Claus J Nielsen

Explore the profile of Claus J Nielsen including associated specialties, affiliations and a list of published articles. Areas
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Articles 42
Citations 155
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Recent Articles
1.
Tan W, Zhu L, Mikoviny T, Nielsen C, Wisthaler A, DAnna B, et al.
J Phys Chem A . 2024 Mar; 128(14):2789-2814. PMID: 38551452
The OH-initiated photo-oxidation of piperidine and the photolysis of 1-nitrosopiperidine were investigated in a large atmospheric simulation chamber and in theoretical calculations based on CCSD(T*)-F12a/aug-cc-pVTZ//M062X/aug-cc-pVTZ quantum chemistry results and master...
2.
Bunkan A, Reijrink N, Mikoviny T, Muller M, Nielsen C, Zhu L, et al.
J Phys Chem A . 2022 May; 126(20):3247-3264. PMID: 35544412
The OH-initiated photo-oxidation of -methylmethanimine, CHN═CH, was investigated in the 200 m EUPHORE atmospheric simulation chamber and in a 240 L stainless steel photochemical reactor employing time-resolved online FTIR and...
3.
Tan W, Zhu L, Mikoviny T, Nielsen C, Tang Y, Wisthaler A, et al.
J Phys Chem A . 2021 Aug; 125(34):7502-7519. PMID: 34424704
The OH-initiated degradation of 2-amino-2-methyl-1-propanol [CHC(NH)(CH)CHOH, AMP] was investigated in a large atmospheric simulation chamber, employing time-resolved online high-resolution proton-transfer reaction-time-of-flight mass spectrometry (PTR-ToF-MS) and chemical analysis of aerosol online...
4.
Tan W, Zhu L, Mikoviny T, Nielsen C, Wisthaler A, DAnna B, et al.
J Phys Chem A . 2020 Dec; 125(1):411-422. PMID: 33378187
The OH-initiated photo-oxidation of piperazine and 1-nitropiperazine as well as the photolysis of 1-nitrosopiperazine were investigated in a large atmospheric simulation chamber. The rate coefficient for the reaction of piperazine...
5.
Antonsen S, Bunkan A, Mikoviny T, Nielsen C, Stenstrom Y, Wisthaler A, et al.
J Phys Chem A . 2020 Jul; 124(32):6562-6571. PMID: 32663395
The reaction of CHNC with OH radicals was studied in smog chamber experiments employing PTR-ToF-MS and long-path FTIR detection. The rate coefficient was determined to be = (7.9 ± 0.6)...
6.
Tan W, Zhu L, Mikoviny T, Nielsen C, Wisthaler A, Eichler P, et al.
J Phys Chem A . 2018 Apr; 122(18):4470-4480. PMID: 29659281
The OH-initiated atmospheric degradation of tert-butylamine (tBA), (CH)CNH, was investigated in a detailed quantum chemistry study and in laboratory experiments at the European Photoreactor (EUPHORE) in Spain. The reaction was...
7.
Sulbaek Andersen M, Kyte M, Andersen S, Nielsen C, Nielsen O
Environ Sci Technol . 2016 Dec; 51(3):1321-1329. PMID: 27936633
FTIR/smog chamber experiments and ab initio quantum calculations were performed to investigate the atmospheric chemistry of (CF)CFCN, a proposed replacement compound for the industrially important sulfur hexafluoride, SF. The present...
8.
Maguta M, Stenstrom Y, Nielsen C
J Phys Chem A . 2016 Aug; 120(35):6970-7. PMID: 27509322
The reaction rates of (CH3)2NNO and (CH3CH2)2NNO with NO3 radicals were determined relative to formaldehyde (CH2O) and ethene (CH2CH2) at 298 ± 2 K and 1013 ± 10 hPa in...
9.
Rozenberg M, Loewenschuss A, Nielsen C
J Phys Chem A . 2016 May; 120(20):3450-5. PMID: 27135379
The FTIR matrix isolation spectra of H2SO4 vapors show a group of bands with synchronous growth of their relative intensities which is independent of the water species content of the...
10.
Bunkan A, Mikoviny T, Nielsen C, Wisthaler A, Zhu L
J Phys Chem A . 2016 Feb; 120(8):1222-30. PMID: 26859252
The kinetics of OH radical reaction with formamide was studied by the relative rate method employing proton transfer reaction-mass spectrometry detection at the European Photochemical Reactor in Valencia, Spain. The...