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71.
72.
Rainer Haas 《Environmental Sciences Europe》1998,10(4):198-199
2-Chlorovinylarsine dichloride (Lewisite I) and 2,2′-dichlorodivinylarsine chloride (Lewisite II) react by room temperature rapidly and quantitatively with dithiols in a substitution reaction. The derivatives were identified with mass spectrometry. They can be detected with GC/ECD. This reactions can be used for the gas chromatographic detection of Lewisites in water and soil samples. 相似文献
73.
Rainer Haas Alfred Krippendorf 《Environmental science and pollution research international》1997,4(3):123-124
A gas Chromatographic method for the determination of phenylarsenic compounds (sternutators) and their metabolites in soil and material samples is described. The chemical warfare agents (CWA), but not their hydrolysis and oxidation products, can be detected with GC/ECD. After derivatization with thiols or dithiols, the sum of diphenylarsenic and phenylarsenic compounds can be determined with GC/ECD. The comparison of the analytical results with and without derivatization shows that the sternutators in the investigated samples are metabolized in part. 相似文献
74.
Kosman Joslaine Monteiro João Frederico Haas Leandro Lenart Vinícius Mariani Weinert Patrícia Los Tiburtius Elaine Regina Lopes 《Environmental science and pollution research international》2021,28(19):24046-24056
Environmental Science and Pollution Research - This study presents the results obtained for the optimization of the mineralization of losartan (LOS) and hydrochlorothiazide (HCTZ) using the... 相似文献
75.
In the investigation of arsenic warfare agents in ammunitions scrap, a differentiation of inorganic and organic arsenic compounds is necessary. This study describes a method that allows this differential determination. By GC/MS CLARK I, some stabilizers and several phenylarsenic compounds could be identified in chemical warfare pellets. 相似文献
76.
Die wechselseitige Beeinflussung der PAK- und Schwermetall-Aufnahme (Cu, Zn, Cd, Pb) durch Weizen und Gerste von einer durch
Munitionsrückst?nde belasteten Nutzfl?che wird beschrieben. Die nachgewiesenen PAK in der Pflanze k?nnten auf Membranver?nderungen
der Wurzeln durch Schwermetalle zurückzuführen sein. 相似文献
77.
Ethylarsine dichloride was used during WW I as a chemical warfare agent. Residues of this chemical warfare agent and its metabolites
are still present today and continue to contaminate soil and water.
A gas Chromatographic method for the detection and determination of ethylarsine dichloride is shown. Six dithiols were tested
as possible derivatization reagents for ethylarsine dichloride. With selection of the dithiol, matrix interferences can be
eliminated because of the different retention times of the derivatives. 相似文献
78.
Rainer W. Sieke Günter Lippke Alfred Krippendorf Rainer Haas Sven Lüdtke 《Environmental science and pollution research international》1998,5(4):199-201
The new technology of Plasmazon® uses the extremely strong oxidation of radicals to break up the compocunds of organic connections, e.g. chemical warfare agents like Clark I. In making a comparison of oxidation to normal ozone, the factor of the Plasmazon® -technology is available up to 103. The investigation in an experimental test shows that it is possible to destroy the warfare agent character of Clark I. As the possibility of a large-lot application this technology is the method of choice for other chemical or biological warfare agents. 相似文献
79.
Warish Ahmed Qian Zhang Satoshi Ishii Kerry Hamilton Charles Haas 《Environmental monitoring and assessment》2018,190(2):105
Potable and non-potable uses of roof-harvested rainwater (RHRW) are increasing due to water shortages. To protect human health risks, it is important to identify and quantify disease-causing pathogens in RHRW so that appropriate treatment options can be implemented. We used a microfluidic quantitative PCR (MFQPCR) system for the quantitative detection of a wide array of fecal indicator bacteria (FIB) and pathogens in RHRW tank samples along with culturable FIB and conventional qPCR analysis of selected pathogens. Among the nine pathogenic bacteria and their associated genes tested with the MFQPCR, 4.86 and 2.77% samples were positive for Legionella pneumophila and Shigella spp., respectively. The remaining seven pathogens were absent. MFQPCR and conventional qPCR results showed good agreement. Therefore, direct pathogen quantification by MFQPCR systems may be advantageous for circumstances where a thorough microbial analysis is required to assess the public health risks from multiple pathogens that occur simultaneously in the target water source. 相似文献
80.
Binstock D Gutknecht W Sorrell K Haas C Winstead W McCombs M Brown G Salmons C Harper SL 《Journal of environmental monitoring : JEM》2012,14(5):1417-1427
Lead in paint continues to be a threat to children's health in cities across the United States, which means there is an ongoing need for testing and analysis of paint. This ongoing analytical effort and especially development of new methods continue to drive the need for diagnostic testing materials that provide the analytical challenges of real-world paints. To this end, 31 different types of paint test materials were developed and prepared. Preparation of the materials included development of lead-containing paint films yielding an overall relative standard error for one individual test sample being less than 10%. The 31 diagnostic test materials prepared with these paint films included two lead pigments; lead concentrations from nominally 0 to 2.0 mg lead/cm(2) (0 to 5% lead by weight); overlayers of both "lead-free," oil-based and water-based paints; Al, Ba, and Mg as potential chemical interferents; red and black potential color interferents; and substrates of wood, metal, masonry, and plaster. These materials challenge each step in method development and evaluation, including paint sample collection and preparation, lead extraction, and measurement of solubilized lead. When the materials were used to test performance of a new lead-in-paint testing method based on extraction using a rotor/stator method and measurement using turbidimetry, the results agreed to within ±20% of the expected lead values for 30 out of 31 of the diagnostic test materials, thereby demonstrating their levels of quality and utility. 相似文献