{"id":38402,"date":"2024-03-26T16:42:37","date_gmt":"2024-03-26T16:42:37","guid":{"rendered":"https:\/\/www.alicat.com\/?post_type=article&p=38402"},"modified":"2026-03-09T23:23:37","modified_gmt":"2026-03-09T23:23:37","slug":"literatur-zur-umwelt-und-luftreinhaltung","status":"publish","type":"support","link":"https:\/\/www.alicat.com\/de\/support\/environmental-and-air-monitoring-literature\/","title":{"rendered":"Forschung im Bereich Umwelt- und Luft\u00fcberwachung"},"content":{"rendered":"\n[et_pb_section fb_built=”1″ _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_row _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_column type=”4_4″ _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_heading title=”Environmental and air monitoring research” _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][\/et_pb_heading][et_pb_text _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]

Alicat has been cited in over 1,000 peer-reviewed research papers. The following papers focus on environmental and air monitoring and emerging technologies in that field. Contact us<\/a> if you\u2019d like your research to be highlighted.<\/p>\n

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<\/div>\n<\/div>[\/et_pb_text][et_pb_accordion _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_accordion_item title=”Evaluation of a low-cost multi-channel monitor for indoor air quality through a novel, low-cost and reproducible platform” open=”on” _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” toggle_font=”|700|||||||” theme_builder_area=”post_content”]

Abstract<\/h3>\n

Short-term exposures to indoor air contaminants can cause adverse health impacts and warrant a need for real-time measurements. The most common indoor pollutants are carbon dioxide (CO2<\/sub>), carbon monoxide (CO), ozone (O3<\/sub>), nitrogen dioxide (NO2<\/sub>), total volatile organic compounds (TVOCs), and particulate matter with a diameter of less than 2.5 \u03bcm (PM2.5<\/sub>). Several low-cost monitors for indoor air quality are commercially available; however, few of them are accurately tested. A stable, easy to use, and reproducible platform was developed in this paper.<\/p>\n

In these laboratory conditions, the comparison between the low-cost sensors and calculated concentration was shown to be linear (R2 of 0.980, 0.972, 0.990, 0.958, 0.987, and 0.816 and rs of 0.982, 0.985, 0.900, 0.924, 0.982, and 0.571 for PM2.5<\/sub>, CO2<\/sub>, CO, NO2<\/sub>, TVOC (ethylene), and O3<\/sub> respectively). Laboratory conditions were used to test possible cross-interferences to the TVOC sensor; an increase of CO2<\/sub>, CO, and NO2<\/sub> of 2500 ppm, 100 ppb, and 100 ppb respectively generated a change in the curve fit from linear to quadratic. A complete validation of a low-cost sensor was achieved by its application in a real indoor place. Good correlation between the reference methods and uHoo measurements of PM2.5<\/sub>, CO2<\/sub>, and O3<\/sub> was achieved (rs = 0.765 to 0.894, 0.721 to 0.863, and 0.523 to 0.622 respectively).<\/p>\n

Reference<\/h3>\n

Baldelli, A. (2021). Evaluation of a low-cost multi-channel monitor for indoor air quality through a novel, low-cost and reproducible platform. Measurement: Sensors<\/em>, 17. https:\/\/doi.org\/10.1016\/j.measen.2021.100059<\/p>[\/et_pb_accordion_item][\/et_pb_accordion][et_pb_text _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]

Alicat\u2019s FP-25 calibrator for air quality samplers, gas analyzers, and canisters<\/a><\/strong><\/p>[\/et_pb_text][et_pb_accordion _builder_version=”4.23.1″ _module_preset=”default” toggle_font=”|700|||||||” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_accordion_item title=”Development of a size-selective sampler combined with an adenosine triphosphate bioluminescence assay for the rapid measurement of bioaerosols” open=”on” _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]

Abstract<\/h3>\n

In this study, a size-selective bioaerosol sampler was built and combined with adenosine triphosphate (ATP) bioluminescence assay for measuring the bioaerosol concentration more rapidly and easily. The ATP bioaerosol sampler consisted of a respirable cyclone, an impactor to collect bioaerosols onto the head of a swab used for ATP bioluminescence assay, a swab holder, and a sampling pump. The collection efficiency of the impactor was tested using aerosolized sodium chloride particles and then the particle diameter corresponding to the collection efficiency of 50% (cut-off diameter) was evaluated. The experimental cut-off diameter was 0.44 \u03bcm. The correlations between ATP bioluminescence (relative light unit; RLU) from commercially available swabs (UltraSnap and SuperSnap, Hygiena, LLC, U.S.A.) and colony forming unit (CFU) were examined using Escherichia coli (E. coli<\/em>) suspension and then the conversion equations from RLU to CFU were obtained.<\/p>\n

From the correlation results, the R2 values of UltraSnap and SuperSnap were 0.53 and 0.81, respectively. The conversion equations were the linear function and the slopes of UltraSnap and SuperSnap were 633.6 and 277.78, respectively. In the lab and field tests, the ATP bioaerosol sampler and a conventional Andersen impactor were tested and the results were compared. In the lab tests, concentrations of aerosolized E. coli collected using the sampler were highly correlated to those from the Anderson impactor (R2 = 0.85). In the field tests, the concentrations measured using the ATP bioaerosol sampler were higher than those from the Andersen impactor due to the limitations of the colony counting method. These findings confirm the feasibility of developing a sampler for rapid measurement of bioaerosol concentrations, offering a compact device for measuring exposure to bioaerosols, and an easy-to-use methodological concept for efficient air quality management.<\/p>\n

Reference<\/h3>\n

Liao, L., Byeon, J. H., & Park, J. H. (2020). Development of a size-selective sampler combined with an adenosine triphosphate bioluminescence assay for the rapid measurement of bioaerosols. Environmental Research<\/em>, 194, 110615. https:\/\/doi.org\/10.1016\/j.envres.2020.110615<\/p>[\/et_pb_accordion_item][et_pb_accordion_item title=”Gas-Phase Chlorine radical oxidation of alkanes: effects of structural branching, NOx, and relative humidity observed during environmental chamber experiments” _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content” open=”off”]

Abstract<\/h3>\n

Chlorine-initiated oxidation of alkanes has been shown to rapidly form secondary organic aerosol (SOA) at higher yields than OH\u2013alkane reactions. However, the effects of alkane volatile organic compound precursor structure and the reasons for the differences in SOA yield from OH\u2013alkane reactions remain unclear. In this work, we investigated the effects of alkane molecular structure on oxidation by chlorine radical (Cl) and resulting formation of SOA through a series of laboratory chamber experiments, utilizing data from an iodide chemical ionization mass spectrometer and an aerosol chemical speciation monitor. Experiments were conducted with linear, branched, and branched cyclic C10<\/sub> alkane precursors under different NOx<\/sub> and RH conditions.<\/p>\n

Observed product fragmentation patterns during the oxidation of branched alkanes demonstrate the abstraction of primary hydrogens by Cl, confirming a key difference between OH- and Cl-initiated oxidation of alkanes and providing a possible explanation for higher SOA production from Cl-initiated oxidation. Low-NOx<\/sub> conditions led to higher SOA production. SOA formed from butylcyclohexane under low NOx conditions contained higher fractions of organic acids and lower volatility molecules that were less prone to oligomerization relative to decane SOA. Branched alkanes produced less SOA, and branched cycloalkanes produced more SOA than linear n-alkanes, consistent with past work on OH-initiated reactions. Overall, our work provides insights into the differences between Cl- and OH-initiated oxidation of alkanes of different structures and the potential significance of Cl as an atmospheric oxidant.<\/p>\n

Reference<\/h3>\n

Jahn, L. G., Wang, D. S., Dhulipala, S. V., & Ruiz, L. H. (2021). Gas-phase chlorine radical oxidation of alkanes: effects of structural branching, NOx<\/sub>, and relative humidity observed during environmental chamber experiments. The Journal of Physical Chemistry A<\/em>, 125(33), 7303\u20137317. https:\/\/doi.org\/10.1021\/acs.jpca.1c03516<\/p>[\/et_pb_accordion_item][\/et_pb_accordion][et_pb_text _builder_version=”4.27.0″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]Drexel University characterizes ozone production using mass flow control<\/a><\/strong>[\/et_pb_text][et_pb_accordion _builder_version=”4.23.1″ _module_preset=”default” toggle_font=”|700|||||||” global_colors_info=”{}” theme_builder_area=”post_content”][et_pb_accordion_item title=”Chrysanthemum flower like silica with highly dispersed Cu nanoparticles as a high-performance NO2 adsorbent” open=”on” _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content”]

Abstract<\/h3>\n

Atmospheric NO2<\/sub> removal is urgent and necessary due to its negative effects on the eco-system. Here we developed the chrysanthemum flower-like silica (KCC-1) loaded with highly dispersed copper nanoparticles for efficient NO2<\/sub> removal under ambient conditions. We carefully studied the NO2<\/sub> removal performance of Cu-KCC-1 materials with different copper loadings (0, 5, 10, and 15 wt%) and demonstrated the Cu0<\/sup> nanoparticles (10 wt%) boosted the NO2<\/sub> removal capacity of KCC-1 by up to 51 times. KCC-1 loaded with 10 wt% of copper was verified to be the best-performing adsorbents, featuring an efficient NO2<\/sub> removal capacity of 3.63 mmol\/g and a moderate NO release (11.3%), which was primarily attributed to the presence of Cu0<\/sup> nanoparticles.<\/p>\n

The mechanistic study unveiled that the loaded Cu0<\/sup> particles served as active adsorption sites for NO2 molecules and reduced the NO2 dissociation by covering the sites primarily responsible for NO2<\/sub> dissociation (i.e., oxygen vacancies). This work affords a promising adsorbent for NO2<\/sub> abatement under ambient conditions. The new knowledge established in developing adsorbents for NO2<\/sub> would promote future research in this emerging and niche area of air pollution control.<\/p>\n

Reference<\/h3>\n

Sun, M., Hanif, A., Wang, T., Yang, C., Tsang, D. C. W., & Shang, J. (2021). Chrysanthemum flower like silica with highly dispersed Cu nanoparticles as a high-performance NO2<\/sub> adsorbent. Journal of Hazardous Materials<\/em>, 418, 126400. https:\/\/doi.org\/10.1016\/j.jhazmat.2021.126400<\/p>[\/et_pb_accordion_item][et_pb_accordion_item title=”Ambient NO2 adsorption removal by Mg\u2013Al layered double hydroxides and derived mixed metal oxides” _builder_version=”4.23.1″ _module_preset=”default” global_colors_info=”{}” theme_builder_area=”post_content” open=”off”]

Abstract<\/h3>\n

NO2<\/sub> is a potent air pollutant because of its deleterious effects on human beings and other organisms. The state-of-the-art catalysis-based deNOx<\/sub> techniques (e.g., selective catalytic\/non-catalytic reduction) are incapable of ambient NO2<\/sub> abatement due to their low efficiency at temperatures below 300 \u00b0C. It is thus conceivable to directly capture NO2<\/sub> from the atmosphere by selective adsorption on porous materials. This work reports the rational development and demonstration of the Mg\u2013Al layered double hydroxides (LDHs) and their derived mixed metal oxides (MMO), using environmentally benign solvents, as high-capacity adsorbents for ambient NO2 abatement.<\/p>\n

By boosting the densities of accessible basic sites using layer delamination strategies, the highest NO2<\/sub> adsorption capacity of 8.52 mmol\/g was achieved by the delaminated LDH material (LDH-AM), which was substantially higher than other popular and robust adsorbents, such as zeolites (0.36\u20133 mmol\/g) and carbon-based adsorbents (2\u20136 mmol\/g). Using Fourier transform infrared spectroscopy and powder X-ray diffraction, it was revealed that NO2<\/sub> adsorption occurs on the surface M-OH basic sites and within the layers by simultaneously replacing the interlayer CO3<\/sub>2\u2212<\/sup> ions of LDH. This work affords not only promising, durable, and scalable adsorbents for ambient NO2<\/sub> removal but also a strategy to develop adsorbents with high density of basic sites for capture of other pollutant acid gases from the environment.<\/p>\n

Reference<\/h3>\n

Hanif, A., Sun, M., Wang, T., Shang, S., Tsang, D. C. W., & Shang, J. (2021). Ambient NO2<\/sub> adsorption removal by Mg\u2013Al layered double hydroxides and derived mixed metal oxides. Journal of Cleaner Production<\/em>, 313, 127956. https:\/\/doi.org\/10.1016\/j.jclepro.2021.127956<\/p>[\/et_pb_accordion_item][\/et_pb_accordion][\/et_pb_column][\/et_pb_row][\/et_pb_section]\n","protected":false},"featured_media":46458,"parent":0,"template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"1920","content-type":"","_searchwp_excluded":""},"categories":[168],"class_list":["post-38402","support","type-support","status-publish","has-post-thumbnail","hentry","category-research-laboratories-industry"],"acf":[],"yoast_head":"\nEnvironmental and Air Monitoring Research - Alicat Scientific<\/title>\n<meta name=\"description\" content=\"Ensure that air is safe to breathe and that industrial emissions meet regulatory standards with high-accuracy, weather-resistant flow meters.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.alicat.com\/de\/unterstutzung\/literatur-zur-umwelt-und-luftreinhaltung\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Environmental and Air Monitoring Research\" \/>\n<meta property=\"og:description\" content=\"Ensure that air is safe to breathe and that industrial emissions meet regulatory standards with high-accuracy, weather-resistant flow meters.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.alicat.com\/de\/unterstutzung\/literatur-zur-umwelt-und-luftreinhaltung\/\" \/>\n<meta property=\"og:site_name\" content=\"Alicat Scientific\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/alicatscientific\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-09T23:23:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.alicat.com\/wp-content\/uploads\/2026\/01\/featured-alicat.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"7\u00a0Minuten\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.alicat.com\\\/support\\\/environmental-and-air-monitoring-literature\\\/\",\"url\":\"https:\\\/\\\/www.alicat.com\\\/support\\\/environmental-and-air-monitoring-literature\\\/\",\"name\":\"Environmental and Air Monitoring Research - 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