Results 181 to 190 of about 20,346 (229)

Poisoning with 2,4-dichlorophenoxyacetic acid treated by hemodialysis

Archives of Toxicology, 1992
In this paper four patients are presented who had been poisoned by 2,4-dichlorophenoxyacetic acid (2,4-D). The first patient, aged 51 years, had attempted to commit suicide by taking orally 400 ml of a 40% solution of 2,4-D. He was admitted in a coma, 6.5 h after poisoning.
Z, Durakovic, A, Durakovic, S, Durakovic, D, Ivanovic   +3 more
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Adsorption of 2,4‐Dichlorophenoxyacetic Acid by an Andosol

Journal of Environmental Quality, 2007
ABSTRACTTo identify the important soil components involved in 2,4‐dichlorophenoxyacetic acid (2,4‐D) adsorption on Andosols, 2,4‐D adsorption on a surface horizon of an Andosol was compared with that on hydrogen peroxide (H2O2)‐treated (soil organic matter [SOM] was removed), acid‐oxalate (OX)‐treated (active metal hydroxides and SOM were removed), and
Syuntaro, Hiradate, Akihiro, Furubayashi, Natsuyo, Uchida, Yoshiharu, Fujii   +3 more
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Fatal overdose of 2,4-dichlorophenoxyacetic acid (2,4-D)

Forensic Science International, 1994
An ingestion of an unknown quantity of U 46 D-Fluid (500 g dichlorophenoxyacetic acid/l) in a suicide is described. Although 2,4-dichlorophenoxyacetic acid (2,4 D) is widely used as a herbicide, intoxications are relatively rare. Quantitation of 2,4-D was performed by diethyl ether extraction from acidified samples (viscera) or by deproteinization ...
T, Keller, G, Skopp, M, Wu, R, Aderjan
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Absorption and Translocation of 2,4-Dichlorophenoxyacetic Acid

Botanical Gazette, 1946
1. The pronounced morphological response in plants to 2,4- dichlorophenoxyacetic acid is useful in studies of translocation. 2. The regulator passed upward but not downward through dead segments of stems. 3. Stomata did not appear to be important portals for entry of the compound into the leaves when it was used in aqueous sprays.
Robert J. Weaver, H. Robert Derose
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2,4-Dichlorophenoxyacetic Acid as a Differential Herbicide

Botanical Gazette, 1944
1. 2,4-Dichlorophenoxyacetic acid was effective as a differential herbicide when applied as an aqueous spray in concentrations of from 250 to 1000 p.p.m. or more. 2. Plants killed by these sprays were dandelion, narrow-leaf plantain, Dutch white clover, chickweed, pigweed, woodsorrel, knotweed, broad-leaf dock, bind-weed, and shiny pennywort.
Paul C. Marth, John W. Mitchell
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Sunscreens Can Increase Dermal Penetration of 2,4-Dichlorophenoxyacetic Acid

Journal of Toxicology: Clinical Toxicology, 2002
Agricultural workers are encouraged to wear sunscreen to reduce their risk of skin cancer. These workers are also exposed to herbicides during the course of their day. The skin is the major source of chemical exposure in agriculture. The purpose of this work is to determine the effect of sunscreen use on the transdermal absorption of a model herbicide,
R M, Brand, M, Spalding, C, Mueller
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Detection of 2,4-Dichlorophenoxyacetic Acid Using a Fluorescence Immunoanalyzer

The Analyst, 1997
A flow immunoassay method for the measurement of 2,4-dichlorophenoxyacetic acid (2,4-D) was developed. The competitive fluorescence immunoassay relies on the use of antibody- or antigen-coated poly(methyl methacrylate) particles (98 microns diameter) as a renewable solid phase.
Kim R. Rogers, Steven D. Kohl, Lee A. Riddick, Kim R. Rogers, Thomas Glass   +4 more
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การตรวจสอบ 2,4-dichlorophenoxyacetic acid โดยวิธีการตรวจวัดสี

ในปัจจุบัน 2,4-dichlorophenoxyacetic acid หรือ 2,4-D ได้รับความนิยมมากในการนำมาใช้เป็นสารกำจัดวัชพืชในด้านการเกษตร สามารถเกิดการปนเปื้อนและตกค้างอยู่ตามสิ่งแวดล้อมได้ ซึ่ง 2,4-D มีความเป็นพิษต่อมนุษย์และสัตว์ที่อาศัยอยู่ในสิ่งแวดล้อม 2,4-D สามารถเกิดการ metabolite ได้ผลิตภัณฑ์หลักเป็น 2,4-dichlorophenol (2,4-DCP) ซึ่งเป็นพิษต่อสิ่งมีชีวิตเช่นเดียวกัน ...
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การศึกษาตัวดูดซับ 2,4-dichlorophenoxyacetic acid และพาราควอต

กรด 2,4-ไดคลอโรฟีนอกซีแอซีติกและพาราควอตเป็นสารกำจัดวัชพืชซึ่งมีการใช้อย่างแพร่หลาย และมีการตกค้างอยู่ในสิ่งแวดล้อม ในการตรวจวิเคราะห์สารทั้งสองชนิดนี้ขั้นตอนการเพิ่มความเข้มข้นจึงเป็นสิ่งจำเป็น โดยตัวดูดซับชนิดของแข็งเป็นหนึ่งในวิธีที่มีประสิทธิภาพมากที่สุดสำหรับสารกำจัดวัชพืชทั้ง 2 ชนิด ในการศึกษานี้ ตัวดูดซับ สำหรับกรด 2,4-ไดคลอโรฟีนอกซีแอซีติก คือ ...
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Biodegradation kinetics of 2,4-dichlorophenoxyacetic acid by aquatic microorganisms

1969
Biological degradation of organic pesticides,1 when provided as the sole substrate, has seldom been examined in aquatic systems. It would be extremely desirable, therefore, to develop a model system from which two pertinent questions could be answered: (a) What is the biological availability of various organic pesticides to degradation, and (b) What is
R B, Hemmett, S D, Faust
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