Lead Contamination in Milks Fed to Infants: 1972-1973

PEDIATRICS ◽  
1974 ◽  
Vol 53 (2) ◽  
pp. 137-141
Author(s):  
Steven H. Lamm ◽  
John F. Rosen
Keyword(s):  
Marked Reduction ◽  
Bovine Milk ◽  
Lead Contamination ◽  
Lead Content ◽  
Significant Source ◽  
Lead Levels ◽  
One Year ◽  
Processing Steps

Previous studies have shown that lead content in commercial milks fed to infants may be sufficient to exceed the daily permissible intake of lead (300µg) for toddlers. Similar studies undertaken one year later have indicated a marked reduction in lead levels of such milks. Nevertheless, processed milks may still deliver up to 100µg of lead daily, whereas, in comparion, fresh human or homogenized bovine milk contains no detectable lead (<0.5µg/100 ml). The presented data suggest that lead contamination is introduced at any one of several processing steps and that milk containers are not a significant source of lead contamination. We propose that currently applied standards of lead in infant milks (six to ten times above the level of contamination) be reviewed.

Assessment of Lead Content in Soil Samples Obtained from Four Different Sites of Kabwe, Central Province of Zambia

2020 ◽  
Vol 1 (1) ◽  
pp. 41-46
Author(s):  
Ellah Zingani ◽  
Gabriel Ndhlovu ◽  
Brian Chanda Chiluba
Keyword(s):  
Soil Samples ◽  
Lead Contamination ◽  
Lead Content ◽  
Central Province ◽  
Residential Areas ◽  
Soil Lead ◽  
The North ◽  
Lead Metal ◽  
Lead Levels ◽  
The University

Pollution has increased soil lead levels to several thousand parts per million; the major cause of soil lead contamination in Kabwe district is the weathering from the former Zinc-lead mine. Soil lead is a health risk when directly ingested or inhaled as and it is of particular concern for children less than 6 years because of its implication on their growth. Hence this study set out to assess the lead soil content in four different sites of Kabwe district, Central province of Zambia. Literature was reviewed from studies that covered soil lead contamination. a quantitative analytical study was carried out and it involved geographical mapping of four different sites the north, South, East, and West of Kabwe district which were conveniently selected to collect soil Samples which were taken to The University of Zambia School of Mines, Geology Engineering Laboratory to determine the Levels of soil Lead content using a technique called Geo-Chemical Analysis. The results suggest that Chowa area is highly polluted with lead metal according to the globally recommended WHO guidelines and Zambia Environmental Management agency which all states that Residential areas should not exceed 400Kg/mg or parts per million.

Cognitive and Behavioral Manifestations of Lead

2010 ◽  
Author(s):  
Hugh L. Evans
Keyword(s):  
United States ◽  
Blood Lead ◽  
The United States ◽  
Conduct Disorders ◽  
Lead Content ◽  
Blood Lead Levels ◽  
Toxic Exposure ◽  
Postnatal Exposure ◽  
Household Dust ◽  
Lead Levels

The link between exposure to lead and children’s cognitive problems was implied in the earliest medical reports of frank lead poisoning of young children in Australia in the 1800s (Lin-Fu 1992). Children with acute severe toxicity of lead (Pb) are now rarely seen in the United States. However, millions of children may have subclinical neurobehavioral disorders associated with chronic low-level exposure to lead, representing a major public health concern (Bellinger 2008a). Lead is a nonessential metal that is recognized as a source of toxic exposure, with the developing nervous system particularly vulnerable. Because of this, U.S. regulations limiting the lead content of gasoline and household paint have led to a gradual reduction of the average blood lead concentration of Americans over the last three decades. Average blood lead levels of children in the United States dropped an estimated 78% from 1976 to 1991 (Brody et al. 1994; Caldwell et al. 2009). Despite these reductions in exposure to lead, new advances in research techniques have documented harmful consequences associated with lower blood lead levels. This raises the possibility that there is no threshold for occurrence of lead-induced toxicity. Bellinger (2008a) refers to “the silent pandemic of neurodevelopmental disorders resulting from children’s continuing exposure to low levels of lead.” The developing brain may be more sensitive to exposure to lead than the adult. Since the pioneering work of Needleman and colleagues (1979), a large scientific literature has documented the deleterious effects of pre- and neonatal exposure to lead. Decrements in IQ scores have proven to be among the most sensitive and consistent consequences of a child’s exposure to lead, but other cognitive and behavioral changes have been described as well, including attention-deficit hyperactivity disorder (ADHD). Among the important current sources of children’s exposure to lead is household dust (Dixon et al. 2009) the lead content in old water pipes, batteries, and from contamination by numerous industrial processes. Pre and postnatal exposure to cigarette smoke is a cofactor with lead exposure in children’s conduct disorders (Braun et al. 2008). Diagnosis of lead-induced disorders involves the determination of exposure to lead and the atomic absorption assay of lead in whole blood.

Variation of freezing point of cow's milk free from extraneous water during lactation

2000 ◽  
Vol 25 ◽  
pp. 165-168
Author(s):  
B.A. Slaghuis ◽  
G.H. Klungel
Keyword(s):  
Milk Yield ◽  
Freezing Point ◽  
Bovine Milk ◽  
Cow’S Milk ◽  
Cow's Milk ◽  
Freezing Points ◽  
Stage Of Lactation ◽  
Lactation Curve ◽  
One Year ◽  
Morning Milk

AbstractThe freezing point of bovine milk is known to vary between narrow limits. However, some variation is possible, because of the osmotic relationship between blood and milk. The extent of variation in freezing points of cow's milk was studied. For one year, freezing points were determined in individual milk samples from a high producing herd. Differences (P<0.05) were found between evening and morning milk yield and freezing points. A ‘lactation curve’ for freezing points was fitted and showed some similarity with milk yield curves. Stage of lactation explained part of the variation of freezing points of cow's milk.

scholarly journals Prediction of bovine milk true protein content by mid-infrared spectroscopy

2011 ◽  
Vol 41 (8) ◽  
pp. 1472-1474 ◽  
Author(s):  
Bruno Garcia Botaro ◽  
Cristina Simões Cortinhas ◽  
Lucinéia Mestieri ◽  
Paulo Fernando Machado ◽  
Marcos Veiga dos Santos
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Bovine Milk ◽  
Dairy Herds ◽  
Protein Determination ◽  
Mid Infrared ◽  
Kjeldahl Method ◽  
Bulk Tank ◽  
One Year ◽  
True Protein

The aim of this study was to estimate the concentration of milk true protein (TP) by mid-infrared absorbance method (MIR) in samples from bulk tank of dairy herds, and to determine the correlation between the results of TP of milk determined by Kjeldahl and MIR. Forty nine dairy herds were selected (17 Holstein, 6 Jersey and 26 Girolando) for monthly collections of samples from bulk tanks during the period of one year (284 samples). Fat, lactose, crude protein and total solids were firstly determined by MIR, and then analyzed for total and true protein by Kjeldahl method. The regression equation to estimate TP contents based on MIR crude protein determination was as follows: TP=0.0021+(1.0104xCP), where: TP is the content of true protein, CP is the crude protein content determined by the MIR method, and 0.0155 is the model error term.

Lead contamination and transfer in urban environmental compartments analyzed by lead levels and isotopic compositions

2014 ◽  
Vol 187 ◽  
pp. 42-48 ◽  
Author(s):  
Xin Hu ◽  
Yuanyuan Sun ◽  
Zhuhong Ding ◽  
Yun Zhang ◽  
Jichun Wu ◽  
...  
Keyword(s):  
Lead Contamination ◽  
Isotopic Compositions ◽  
Lead Levels ◽  
Environmental Compartments

scholarly journals Efficacy of a Gluten-Free Diet in the Gilles de la Tourette Syndrome: A Pilot Study

2018 ◽  
Author(s):  
Luis Rodrigo ◽  
Nuria Álvarez ◽  
Enrique Fernández-Bustillo ◽  
Javier Salas-Puig ◽  
Marcos Huerta ◽  
...  
Keyword(s):  
Pilot Study ◽  
Tourette Syndrome ◽  
Marked Reduction ◽  
Gluten Free Diet ◽  
Gluten Sensitivity ◽  
Gluten Free ◽  
Prospective Pilot Study ◽  
Before And After ◽  
One Year

The Gilles de la Tourette syndrome (GTS) and Non-Coeliac Gluten Sensitivity (NCGS) may be associated. We analyse the efficacy of a gluten-free diet (GFD) in 29 patients with GTS (23 children; 6 adults) in a prospective pilot study. All of them followed a GFD for one year. The YGTSS, Y-BOCS/CY-BOCS and GTS-QOL questionnaires were compared before and after the GFD. 74% of children and 50% of adults were males, not significant (NS). At the beginning of the study, 69% of children and 100% of adults had associated OCD (NS). At baseline, the YGTSS scores were 55.0 &plusmn; 17.5 (children) and 55.8 &plusmn; 19.8 (adults) (NS), the Y-BOCS/CY-BOCS scores were 15.3 (SD = 12.3) (children) and 26.8 (9.2) (adults) (p = 0.043), and the GTS-QOL scores were 42.8 &plusmn; 18.5 (children) and 64 &plusmn; 7.9 (adults) (p = 0.000). NCGS was frequent in both groups, with headaches reported by 47.0% of children and 83.6% of adults (p = 0.001). After one year on a GFD there was a marked reduction in measures of tics (YGTSS) (p = 0.001), and the intensity and frequency of OCD (Y-BOCS/CY-BOCS) (p = 0.001), along with improved QOL (p = 0.001) in children and adults. In conclusion, a GFD maintained for one year in GTS patients led to a marked reduction in tics and OCD both in children and adults.

scholarly journals Exposição por chumbo dos profissionais de segurança pública na região de Cascavel-PR

2015 ◽  
Vol 10 (2) ◽  
pp. 47
Author(s):  
V. De Souza ◽  
O. Korand ◽  
A. C. Gonçalves Junior
Keyword(s):  
Public Safety ◽  
Lead Contamination ◽  
Lead Content ◽  
Degree Of Contamination ◽  
Legal Requirements ◽  
Military Police ◽  
The Public ◽  
Firing Range ◽  
Shooting Range Soil ◽  
The Military

<p>EO objetivo desta pesquisa é mostrar os riscos a que estão expostos os profissionais de segurança pública. Sendo realizadas análises do solo do estande de tiro, verificandoos índices de contaminação por chumbo para apresentar o panorama atual de como está este ambiente utilizado pelos policiais militares. .Este trabalho apresenta os resultados do monitoramento temporal do solo do estande de tiro da Polícia Militar localizado no município de Cascavel, Paraná, através de levantamento de amostras em duas campanhas realizadas nos anos de 2013 e 2015. Que consistiu na comparação dos resultados, executados nos mesmos locais. Obtendo-se assim os teores de chumbo tendo em vista a deposição de projéteis de arma de fogo no solo do estande. Foi possível avaliar o grau de contaminação existente e comparar com a determinação legal da Resolução 420 do CONAMA que estabelece os níveis aceitáveis ou não de chumbo no solo. Os índices de teores de chumbo apresentados demonstram que os profissionais de segurança pública, em particular os policiais militares, podem estar expostos à contaminação e assim devem ser tomadas medidas de remediação conforme a prevê a legislação vigente. </p><p align="center"><strong><em>Lead exposure in the professional public safety region Cascavel-PR </em></strong></p><pre><strong>Abstract:</strong> The objective of this research is to show the risks they are public safety workers exposed. Being from the shooting range soil analyzes, verifying the lead contamination indexes to present the current situation of how this environment is used by police. This paper presents the results of temporal monitoring of soil Military Police firing range located in Cascavel, Paraná, through a survey samples in two campaigns conducted in the years 2013 and 2015. That was the comparison of results, performed in same places. Thus yielding the lead content in view of the deposition of firearm projectiles in the soil of the stand. It was possible to evaluate the degree of contamination and compare with the legal requirements of Resolution 420 of CONAMA establishing acceptable levels or absence of lead in soil. The lead content ratios presented show that the public safety professionals, particularly the military police, may be exposed to contamination and thus should be taken remedial measures as the current legislation provides.</pre><p> </p><div> </div>

scholarly journals Effect of Exterior Home Renovation on Community Lead Hazards: A Pilot Study in South Bend, Indiana

2021 ◽  
Author(s):  
Kyle Moon ◽  
Meghanne Tighe ◽  
Joshua Brooks ◽  
J. Mike Coman ◽  
Heidi Beidinger-Burnett ◽  
...  
Keyword(s):  
Lead Level ◽  
Bare Soil ◽  
Soil Samples ◽  
Lead Contamination ◽  
Soil Lead ◽  
Lead Paint ◽  
The Us ◽  
Lead Levels ◽  
South Bend ◽  
Lead Hazards

Communities across the US face challenges from legacy lead contamination. In South Bend, Indiana, over 68,000 homes were built before 1978, and most contain leaded paint. When these homes are repainted, repaired, or renovated, failure to use lead-safe practices can contaminate the surrounding soil with lead paint flakes and dust. In this study, we used X-ray fluorescence (XRF) to measure soil lead levels surrounding a home with exterior leaded paint (about 10% Pb w/w) after it was repainted in fall of 2019. The painted wooden exterior was prepared for painting by dry scraping without the use of tarps or plastic barriers. A total of 220 soil samples were collected from the home and its immediate neighbors, and an additional 102 samples were collected from 34 homes in the same neighborhood. The median lead level in dripline soil samples across the neighborhood was 434 ppm, but in the recently repainted house, the median soil lead was 1808.9 ppm, and it was 1,346.4 ppm in the four neighboring homes. The repainted house and its four neighbors were mulched by covering all bare soil to a 4-6 inch depth with chipped wood mulch. Two months later, another 100 soil samples were collected and analyzed. The surface lead level around the target house dropped to 13.8 ppm, showing that mulching is an effective strategy for interim control of high soil lead levels.

scholarly journals Microbiological quality of broiler carcasses during slaughter processing

2012 ◽  
Vol 81 (1) ◽  
pp. 37-42 ◽  
Author(s):  
Irena Svobodová ◽  
Gabriela Bořilová ◽  
Radka Hulánková ◽  
Iva Steinhauserová
Keyword(s):  
Escherichia Coli ◽  
Microbial Contamination ◽  
Microbiological Quality ◽  
E Coli ◽  
Poultry Processing ◽  
One Year ◽  
The Impact ◽  
Processing Steps

Microbial contamination of poultry carcasses can be influenced by many factors during transport and slaughtering. The aim of this study was to evaluate the impact of four processing steps (plucking, evisceration, washing and chilling) on the total viable counts (TVC), counts ofEscherichia coli,Salmonellaspp. andListeriaspp. incidence on broiler carcasses. A total of 160 broiler carcasses originating from one farm were collected during one year period at a Czech slaughterhouse and examined. Both TVC andE. colicounts decreased during processing from 4.6 log cfu/cm2and 3.5 log cfu/cm2to 3.7 log cfu/cm2and 1.8 log cfu/cm2, respectively, with a major impact of washing on TVC and washing and chilling onE. colidecrease (P< 0.001). BothSalmonellaspp. (6 strains) andListeriaspp. (12 strains, none ofL. monocytogenes) were found sporadically in all processing steps followed. However, a decreasing trend was observed inSalmonellacounts andListeriaspp. incidence during the processing. Thus, this study brings new valuable information on the dynamics of microflora during modern poultry processing.

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