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  • 1
    Online Resource
    Online Resource
    Comparative methods for chlorophyll detection in leaves
    National Research and Development Institute for Industrial Ecology IND-ECOIND ; 2022
    In:  Romanian Journal of Ecology & Environmental Chemistry Vol. 4, No. 2 ( 2022-12-28), p. 23-31
    Details
    In: Romanian Journal of Ecology & Environmental Chemistry, National Research and Development Institute for Industrial Ecology IND-ECOIND, Vol. 4, No. 2 ( 2022-12-28), p. 23-31
    Abstract: Population growth puts an increasing pressure on the agriculture, so progressive field crops practice requires modern, reliable and cost efficient methods to monitor crop development and yield. The chlorophyll plant leaves content is the most common and used biochemical parameter for the plant physiological monitoring such as, the dynamic processes of growth, metabolism, reproduction and defense. Our paper aims to analyze the chlorophyll content by comparing two methods, optical method vs classical spectrometric detection method. A comparison between a quick and cost-effective screening method using portable CCM-200 plus (Opti-Science, Inc) and a more laborious and time consuming biochemical chlorophyll extraction method. The chlorophyll concentration data was obtained from terrestrial plants such as marigold (Calendula officinalis) and wheat (Triticum sp.). Chlorophyll pigments have had a non-uniform distribution on the leaves surface, thus the concentration differs during the day lengthy, and this induces variation for the optical measurements. In this study, we optimized the optical measurement of chlorophyll pigments by a mathematical correlation of the optical chlorophyll content conversion to absolute chlorophyll. The relationships between the CCM-200 plus measurements and the values obtained for the absolute chlorophyll concentration, as well as the chlorophyll a/b ratio, suggested a wide range of relationships between the two species.
    Type of Medium: Online Resource
    ISSN: 2668-5418 , 2668-8530
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.21698/rjeec.2022.2
    DOI: 10.21698/rjeec
    DOI: 10.21698/rjeec.2022.202
    Language: Unknown
    Publisher: National Research and Development Institute for Industrial Ecology IND-ECOIND
    Publication Date: 2022
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  • 2
    Online Resource
    Online Resource
    Bacterial Biodegradation of Perfluorooctanoic Acid (PFOA) and Perfluorosulfonic Acid (PFOS) Using Pure Pseudomonas Strains
    MDPI AG ; 2023
    In:  Sustainability Vol. 15, No. 18 ( 2023-09-21), p. 14000-
    Details
    In: Sustainability, MDPI AG, Vol. 15, No. 18 ( 2023-09-21), p. 14000-
    Abstract: The principal objective of the present research involved the achievement of high biodegradation degrees of perfluorooctanoic acid (PFOA) and perfluorosulfonic acid (PFOS) using pure individual bacterial strains. The use of such microorganisms can contribute to the improvement of the wastewater treatment process in sewage treatment plants through bioaugmentation or other bioremediation processes. Thus, in this study, we investigated the biodegradation potential of PFOA and PFOS. Bacterial strains tested in this study were from the Pseudomonas genus, namely: Pseudomonas aeruginosa and Pseudomonas putida, due to their known capacity to degrade xenobiotic compounds. The results indicated that Pseudomonas aeruginosa was able to transform 27.9% of PFOA and 47.3% of PFOS in 96 h, while Pseudomonas putida managed to transform 19.0% of PFOA and 46.9% of PFOS in the same time frame. During the biodegradation tests, PFHxA was recognized as the principal biotransformation product of PFOA in the presence of Pseudomonas aeruginosa, and PFPeA, PFPxA and PFHpA were recognized as the biotransformation products in the presence of Pseudomonas putida. For PFOS, only two biotransformation products (PHHxA and PFHpA) were observed as a consequence of biodegradation by both bacterial strains.
    Type of Medium: Online Resource
    ISSN: 2071-1050
    URL: Article
    DOI: 10.3390/su151814000
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2518383-7
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  • 3
    Online Resource
    Online Resource
    Influence of Anthropogenic Pressures on Groundwater Quality from a Rural Area
    Revista de Chimie SRL ; 2017
    In:  Revista de Chimie Vol. 68, No. 8 ( 2017-9-15), p. 1744-1748
    Details
    In: Revista de Chimie, Revista de Chimie SRL, Vol. 68, No. 8 ( 2017-9-15), p. 1744-1748
    Abstract: During the past few decades, the anthropogenic activities induced worldwide changes in the ecological systems, including the aquatic systems. This work analysed the contamination level of groundwater resources from a rural agglomeration (Central-Western part of Prahova County) by biological and physico-chemical approaches. The study was performed during the autumn of 2016 on several sampling sites (four drilling wells, depth higher than 100 m supplying three villages; two wells lower than 10 m depth and one spring). The water quality was evaluated by comparison with the limit values of the drinking water quality legislation (Law no.458/2002) and the Order 621/2014 (applicable to all groundwater bodies of Romania). The results showed that phenols and metals (iron and manganese) exceeded the threshold values in all sampling sites. Moreover, the anthropogenic factors including agriculture, use of fertilizers, manures, animal husbandry led to an increase of the bacterial load, particularly at wells sites.
    Type of Medium: Online Resource
    ISSN: 0034-7752 , 2668-8212
    URL: Article
    DOI: 10.37358/RC.17.8.5756
    Language: English
    Publisher: Revista de Chimie SRL
    Publication Date: 2017
    detail.hit.zdb_id: 2488208-2
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  • 4
    Online Resource
    Online Resource
    DANUBE DELTA: MONITORING AND ECOLOGICAL STATUS. A LINK BETWEEN THE PAST AND THE FUTURE
    National Research and Development Institute for Industrial Ecology IND-ECOIND ; 2019
    In:  Romanian Journal of Ecology & Environmental Chemistry Vol. 1, No. 1 ( 2019-9-20), p. 72-82
    Details
    In: Romanian Journal of Ecology & Environmental Chemistry, National Research and Development Institute for Industrial Ecology IND-ECOIND, Vol. 1, No. 1 ( 2019-9-20), p. 72-82
    Abstract: The paper aims a review of the water quality monitoring and evaluation studies conducted at National R & D Institute for Industrial Ecology over the last ten years, at the level of aquatic ecosystem complexes in the Danube Delta. The paper will include a broad compendium of data including: a data bank of abiotic variables which control the structure and composition of biotic communities; studies of ecological status assessment; methodology development for assessing the bioaccumulation of chemical pollutants (metals) in the biota; ecotoxicological study of surface water and sediment on aquatic organisms (algae, crustaceans, rotifers); studies on the benthic invertebrate species as biological vectors for pathogens; technical / scientific support for 5 national / international project proposals; 19 papers published in international / national journals; 22 papers presented at international / national scientific conferences.
    Type of Medium: Online Resource
    ISSN: 2668-8530 , 2668-5418
    URL: Issue
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.21698/rjeec.2019
    DOI: 10.21698/rjeec.2019.1
    DOI: 10.21698/rjeec
    DOI: 10.21698/rjeec.2019.108
    Language: English
    Publisher: National Research and Development Institute for Industrial Ecology IND-ECOIND
    Publication Date: 2019
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  • 5
    Online Resource
    Online Resource
    ANTHROPOGENIC POLLUTANTS: 10 YEARS OF PROGRESS IN ECOTOXICOLOGICAL STUDIES AND AQUATIC RISK ASSESSMENT
    National Research and Development Institute for Industrial Ecology IND-ECOIND ; 2019
    In:  Romanian Journal of Ecology & Environmental Chemistry Vol. 1, No. 1 ( 2019-9-20), p. 26-38
    Details
    In: Romanian Journal of Ecology & Environmental Chemistry, National Research and Development Institute for Industrial Ecology IND-ECOIND, Vol. 1, No. 1 ( 2019-9-20), p. 26-38
    Abstract: The market expansion due to globalization generated more anthropogenic contaminants, enhancing their negative impact on the environment. In order to prevent and balanced their negative effect, more rapid, sensitive and eco-friendly ecotoxicological studies as risk assessments were developed. Each country developed national programs to ensure the research infrastructure for implementation and development of new testing methodologies, generating new experimental data transferable to governmental authorities, economic agents and academia. In this review, we intend to highlighted the progress of Romanian researchers in the last 10 years in the field of ecotoxicology and aquatic risk assessment. The studies focused on aquatic systems as a non-targeted system to the anthropogenic pollutants impact. The implemented methodologies according with international requirements for chemical control like REACH Regulation, Detergents Regulation, Biocide Products Regulation or the Aquatic Risk Assessment Guidelines were presented. The ecotoxicological effects of various contaminants such as detergents, pharmaceuticals, pesticides, biocides or heavy metals and environmental polluted samples (surface water, sediment or sludge) were provided. Overall, the studies presented in our studies have a nationally novelty through the variety of test substances, the complexity of laboratory experiments and data processing. The research work has a continue applicability in industry and for control authorities. New accredited testing services that providing useful information about the chemicals and their impact on the environmental were introduced. In addition, the ecotoxicology studies and their challenges were a great source for professional training like PhD and master studies and for impact published papers.
    Type of Medium: Online Resource
    ISSN: 2668-8530 , 2668-5418
    URL: Issue
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.21698/rjeec.2019
    DOI: 10.21698/rjeec.2019.1
    DOI: 10.21698/rjeec
    DOI: 10.21698/rjeec.2019.104
    Language: English
    Publisher: National Research and Development Institute for Industrial Ecology IND-ECOIND
    Publication Date: 2019
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