Pesticide residues in the total diet in Canada

A total diet, representative of a Canadian's daily food intake was formulated, grouped by types of food, and prepared as for eating. Analysis of these composites for residues showed eleven organochlorine but no organophosphorus pesticides. Residues were low and would yield an average total daily intake of 24μg/person/day. The level of arsenic was determined on one-quarter of the samples and was found to be consistently below 0.1 ppm.     

Pesticide residues in total diet samples (VIII).

During the eighth year of the Total Diet Study, residues remained at the relatively low levels reported previously. A total of 35 market baskets were collected in 32 cities which ranged in population from less than 50,000 to 1,000,000 or more. Averages and ranges of residues found are reported for the period June 1971 through July 1972 by region and food class. Results of recovery studies within various classes of residues are also presented.     

Pesticide residues in foodstuffs in Great Britain XIV.—Mercury residues in potatoes

The total mercury contents of the skin and flesh fractions of potatoes from 87 commercial crops grown in England were in the range 0.0–0.08 ppm with the majority in the range 0.01–0.04 ppm.     

Pesticide residues in foodstuffs in Great Britain: XIII.—Organochlorine residues in cereals,pulses and nuts

Results are presented for the determination of organochlorine insecticide residues in grain, pulses and nuts sampled on arrival in Britain during the 2½ years up to June 1969. BHC was detected in nearly every sample but the general level was low, most samples containing less than 0·1 ppm. DDT was found less frequently. Very few samples contained more than 1 ppm of either insecticide. DDE in trace amounts was found in about 10% of the samples of grain and nuts and TDE was found in one sample of grain. The only other organochlorine compounds detected were aldrin in one sample of pulses and hexachlorobenzene in 7 samples of wheat.     

Pesticide residues in foodstuffs in Great Britain. Pesticide residues in raspberries and strawberries

Over the period 1968/70 147 samples of raspberries and 124 samples of strawberries were analysed for organochlorine insecticide residues. DDT was found in 30% of the samples but only one sample contained as much as 1.4 parts/million. No residues were detected in the raspberries during the last year of the survey which coincided with the discontinued use of DDT on this crop. 184 of the above samples were also analysed for residues of organophosphorus insecticides and the fungicide dichlofluanid. Malathion was found in one sample of raspberries. Approximately 40% of the strawberries contained detectable amounts of dichlofluanid and its metabolite with combined residues ranging from 0.1 to 7.5 parts/million. Only two samples of raspberries contained residues of either dichlofluanid or its metabolite. It is considered that the residues of these various pesticides should not present a hazard to consumers.     

Pesticide residues: Food surveys in the United Kingdom

The development of food surveys for levels of pesticide residues, toxic metals and polychlorobiphenyls and related compounds is outlined. The role of the surveys in monitoring the effect on the levels of compounds in specific foods following changes in pesticide usage is explained. Studies over 8 years on levels in the total diet show they are well below the acceptable daily intakes recommended by the Food and Agriculture Organisation/World Health Organisation for organchlorine and other pesticides. During this period the levels found have in general declined.     

Pesticide residues in foodstuffs in Great Britain; organochlorine pesticides,organophosphorus pesticides and fumigant residues in home-produced and imported wheat

Residue levels of organochlorine pesticides, organophosphorus pesticides, fumigants and bromide were determined in home-produced and imported wheat during the period October 1978 to April 1979. A total of 281 samples was analysed of which 133 contained low levels of carbon tetrachloride, 112 contained low levels of gamma-HCH and 26 contained low levels of malathion. One sample contained a residue of carbon tetrachloride, and another a residue of 1,2-dichloroethane, both of which were above the Codex Alimentarius guide-line levels. No other residue approached the proposed Codex Alimentarius maximum residue limits.     

加拿大农药经营与使用许可管理制度

本文介绍了加拿大农药经营与使用许可管理制度的有关情况。加拿大实行联邦和省级平行立法体系,由联邦和各省政府按照法律划定的职责权限共同行使农药管理职责。     

Pesticide residue concentrations in soils of five United States cities, 1971--urban soils monitoring program.

Soil samples from five metropolitan areas including Baltimore, Maryland; Gadsden, Alabama; Hartford, Connecticut; Macon, Georgia; and Newport News, Virginia were analyzed for elemental arsenic, organochlorine pesticides, and polychlorinated biphenyls (PCBs). A representative number of samples were analyzed for organophosphorus pesticides, but none was detected. All areas exhibited heavy soil concentrations of organochlorine pesticides including sigma DDT, aldrin, dieldrin, photodieldrin, chlordane, heptachlor, heptachlor epoxide, endrin, endrin ketone, and endosulfan sulfate. PCBs were detected in three of the five metropolitan areas. Within the metropolitan areas, samples from the urban, or core city, locations generally had higher pesticide concentrations than did samples from suburban locations. Finally, pesticide residue concentrations were generally higher in soils of metropolitan areas than in nearby agricultural soils.     

Pesticides and other chemical residues in infant and toddler total diet samples-(I)-August 1974-July 1975

Since 1964, the Food and Drug Administration, U.S. Department of Health, Education and Welfare, has reported residues of pesticides and other chemicals present in the average diet of the young adult male. The present report is the first in a series of market baskets whose purpose is to monitor the average diet of infants and toddlers for the same residues. Ten market baskets were collected in 10 cities which ranged in population from less than 50,000 to 1,000,000 or more. Averages and ranges of residues found are reported by food class. Results of recovery studies of known residues and chemicals within various food classes are also presented.     

2014年度农药舆情分析

通过对2014年监测的与农药相关的45.5万条舆情样本进行分析,从舆情内容、时间、地域和媒介等方面对当年舆情发生特点进行了阐述,并对热点舆情以及各方应对进行了梳理,同时提出了相关建议。     

2014年中国农药行业运行情况

2014年中国农药行业生产运行平稳,进出口贸易持续增长,但行业效益下滑,利润总额近六年首次出现负增长,行业处在转型之痛中。     

Determination of residues of the molluscicide trifenmorph and its breakdown product triphenylcarbinol: I.—Method

A procedure has been developed for the analysis of crops and soils for residues of trifenmorph (N-trityl-morpholine) molluscicide and its breakdown product triphenylcarbinol (TPC). Samples were extracted with 20% by vol. acetone in petroleum ether and the efficiency of the extraction was established using radiochemical techniques. The extracts were subjected to column chromatography on basic alumina columns to separate trifenmorph from the TPC. The residues were converted to trichloroethyl ether derivatives followed by clean-up by column chromatography on silica gel and analysis of down to 0·02 ng by gas-liquid chromatography. Blank values were generally 0·01–0·02 ppm, recoveries were on average about 80% and were limited to this value by the yield of the etherification reaction. The storage stability of the residues at —10°c was satisfactory.     

Organochlorine residues in six species of estuarine birds, South Carolina, 1971-75.

In South Carolina between 1971 and 1975, authors evaluated the occurrence of organochlorine residues in the laughing gull (Larus atricilla), white ibis (Eudocimus albus), glossy ibis (Plegadis falcinellus), American oystercatcher (Haematopus palliatus), willet (Catoptrophorus semipalmatus), and ruddy turnstone (Arenaria interpres). Tissues of birds found dead and eggs were analyzed, eggshell thicknesses were measured, and incidental observations were made of reproductive success and population status. Eggshell thickness of the white bis, American oystercatcher, and laughing gull were not significantly different (P less than 0.05) from the pre-1947 norms. DDE and polychlorinated biphenyls (PCBs) were found most frequently and at the highest concentration in eggs. DDE residues declined significantly in oystercatcher eggs, and declined slightly in laughing gull eggs; no change was noted in white ibis eggs. No consistent trends were found for dieldrin and PCBs. Authors found no obvious problems with reproductive success of any species. Populations of the five species breeding in South Carolina appear stable. The white ibis and laughing gull in South Carolina have experienced population explosions over the past 50 years; the glossy ibis has increased substantially since the first documented breeding records in 1947.     

Organochlorine insecticide residues in bovine milk and manufactured milk products in Illinois, 1971-76.

Monitoring activities were initiated in 1971 to survey the occurence and levels of organochlorine insecticide residues in bovine milk and manufactured milk products in Illinois. Dieldrin residues were the most prevalent, and were found in 96 percent of the samples. Dieldrin also accounted for the highest average residue concentration (0.09 ppm). Only 0.3% of the samples contained illegal insecticide residues. Levels of DDT and lindane were generally declining, but those for dieldrin and heptachlor epoxide tended to remain constant.     

2014年巴西农药市场分析与发展展望

本文介绍了2014年巴西农药市场的总体情况,对市场特点进行了总结分析,并展望了未来的发展趋势。     

2014年我国农药登记产品的特点和趋势分析

本文分析了2014年我国农药登记产品的特点和趋势,农药登记产品数量下降,正式登记产品趋势增加;杀虫剂产品数量排名第一,杀菌剂占比趋势上升;悬浮剂产品名列首位,剂型优化趋势显著;新农药数量增加稳定,国内研发趋势增强;生物农药稳步发展,农产品安全趋势向好;小作物用药登记取得突破,无药可用趋势下降;专供出口登记停止,分装登记管理趋势加强。     

Organochlorine residues in harp seal (Phagophilus groenlandicus) tissues, Gulf of St. Lawrence, 1971, 1973.

Levels of p,p'-DDT, p,p'-TDE, p,p'-DDE, dieldrin, polychlorinated biphenyls (PCBs), and HCB were determined in certain tissues of 31 harp seals (P hagophilus groenlandicus) taken from the Gulf of St. Lawrence during 1971 and 1973. The seals ranged in age from less than two weeks to 18 years. Mean concentrations of PCBs and sigma DDT in the various tissues were about the same sigma DDT levels were 1.64--9.88 ppm in adult seal blubber and 1.08--3.73 ppm in seal pup blubber. Organochlorine levels in harp seal samples taken in 1973 were similar to those reported by other workers for samples collected in the Gulf of St. Lawrence during 1967-71.     

Pesticide residues in soil and foodstuff I. Chlorinated pesticides in cattle feed and milk produced in orchard and non-orchard areas

Milk, hay and silage produced in orchard and non-orchard areas have been analysed for their content of chlorinated pesticides. The residue levels in milk produced in orchard areas were about double those in milk produced in non-orchard areas. The levels in hay were much higher (30% up to sevenfold) in the hay produced in orchard areas and the levels in silage from the two areas showed small differences. Milk collected after cattle had been grazing in an orchard for 3 to 4 days contained 10% more pp′-DDT and 2-, 3-, 7- and 15-fold morepp′-DDE, pp′-TDE and heptachlor epoxide, gamma-BHC and pp′-TDE olefin [1-chloro-2,2-bis(p-chlorophenyl)ethylene], respectively, than did the samples collected one day before the cattle grazed in the orchard.