scholarly journals High Lead Bioavailability of Indoor Dust Contaminated with Paint Lead Species

2020 ◽  
Vol 55 (1) ◽  
pp. 402-411
Author(s):  
Tyler D. Sowers ◽  
Clay M. Nelson ◽  
Gary L. Diamond ◽  
Matthew D. Blackmon ◽  
Marissa L. Jerden ◽  
...  
Keyword(s):  
Indoor Dust ◽  
High Lead ◽  
Lead Species

COMPOSITION OF TRACE METALS IN INDOOR DUST DURING AND AFTER BUILDING RENOVATION

2018 ◽  
Vol 17 (8) ◽  
pp. 1781-1790
Author(s):  
Mohd Talib Latif ◽  
Tan Sheh Na ◽  
Nor Hafizah Baharudin ◽  
Thunwadee Srithawirat ◽  
Noorlin Mohamad ◽  
...  
Keyword(s):  
Trace Metals ◽  
Indoor Dust

PROMET 6

Alloy Digest ◽  
1970 ◽  
Vol 19 (7) ◽  
Keyword(s):  
Compressive Strength ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Lead

Abstract PROMET 6 is produced in three grades: PROMET 6, PROMET 6 SK and PROMET 6 CR. These alloys comprise a series of high-lead tin bronzes, traditionally known as the bearing bronzes. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: Cu-218. Producer or source: American Crucible Products Company.

FEDERAL BRONZE 822

Alloy Digest ◽  
1976 ◽  
Vol 25 (12) ◽  
Keyword(s):  
Fracture Toughness ◽  
Compressive Strength ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tensile Properties ◽  
Elevated Temperatures ◽  
Heat Treating ◽  
Copper Base ◽  
High Speeds ◽  
High Lead

Abstract FEDERAL BRONZE 822 is a copper-base, high-lead bearing bronze with superior resistance to scoring and seizure beyond the endurance and danger limits of ordinary bearing bronzes. It is used in applications involving high speeds, poor lubrication, heat-generating loads, elevated temperatures, dusty and gritty surroundings, or where a liquid other than oil is used as the lubricant. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness. It also includes information on casting, heat treating, machining, joining, and surface treatment. Filing Code: Cu-324. Producer or source: Federal Bronze Products Inc..

Chlorinated Paraffins in Indoor Dust Samples: A Review

2014 ◽  
Vol 18 (17) ◽  
pp. 2209-2217 ◽  
Author(s):  
Mehmet Coelhan ◽  
Bettina Hilger
Keyword(s):  
Indoor Dust ◽  
Chlorinated Paraffins

scholarly journals Exposure to Phthalate and Organophosphate Esters via Indoor Dust and PM10 Is a Cause of Concern for the Exposed Saudi Population

2021 ◽  
Vol 18 (4) ◽  
pp. 2125
Author(s):  
Nadeem Ali ◽  
Nabil A. Alhakamy ◽  
Iqbal M. I. Ismail ◽  
Ehtisham Nazar ◽  
Ahmed Saleh Summan ◽  
...  
Keyword(s):  
Daily Intake ◽  
Indoor Dust ◽  
Air Conditioner ◽  
Lifetime Cancer Risk ◽  
Organophosphate Esters ◽  
Local Public Health ◽  
Suspended Particulate ◽  
Settled Dust ◽  
Filter Dust ◽  
Ethylhexyl Phthalate

In this study, we measured the occurrence of organophosphate esters (OPEs) and phthalates in the settled dust (floor and air conditioner filter dust) and in suspended particulate matter (PM10) from different microenvironments (households (n = 20), offices (n = 10) and hotels (n = 10)) of Jeddah, Saudi Arabia. Bis (2-Ethylhexyl) phthalate (DEHP) was the major pollutant (contributing >85% of total chemicals burden) in all types of indoor dust with a concentration up to 3,901,500 ng g−1. While dibutyl phthalate (DBP) and DEHP together contributed >70% in PM10 (1900 ng m−3), which indicate PM10 as a significant source of exposure for DBP and DEHP in different Saudi indoor settings. Tris (1-chloro-2-propyl) phosphate (TCPP) was the major OPE in PM10 with a concentration of up to 185 ng m−3 and the occurrence of OPEs in indoor dust varied in studied indoor settings. The estimated daily intake (EDI) of studied chemicals via dust ingestion and inhalation of PM10 was below the reference dose (RfD) of individual chemicals. However, estimated incremental lifetime cancer risk (ILCR) with moderate risk (1.5 × 10−5) for Saudi adults and calculated hazardous index (HI) of >1 for Saudi children from DEHP showed a cause of concern to the local public health.

Electrospun polyacrylonitrile/polyvinyl pyrrolidone composite nanofibrous membranes with high-efficiency PM2.5 filter

2020 ◽  
Vol 40 (6) ◽  
pp. 487-493
Author(s):  
Chen Wang ◽  
Kun Yan ◽  
Jun Wang ◽  
Siyu Chen ◽  
Jiaming Cui ◽  
...  
Keyword(s):  
Pore Structure ◽  
Composite Nanofibers ◽  
High Efficiency ◽  
Fine Particulate Matter ◽  
Polyvinyl Pyrrolidone ◽  
Indoor Dust ◽  
Mass Ratio ◽  
Filter Efficiency ◽  
Fine Particulate ◽  
Closed Pore

AbstractIn this research, we successfully fabricated a novel closed pore polyacrylonitrile (PAN)/polyvinyl pyrrolidone (PVP) composite nanofibrous membrane (PCNM) on the substrate of a commercial polypropylene window mesh. First, smooth and uniform PAN/PVP composite nanofibers (PCNs) were manufactured by blending PAN and PVP with a mass ratio of 5:5 during electrospinning. Subsequently, the prepared PCNs were hot pressed in a vacuum drying oven at a given temperature of 90°C. The morphology and filter efficiency of PCN and PCNM were investigated. It was found that hot-pressing treatment significantly affected the pore structure and orientation of PCNM, which contributed to its closed pore structure and good alignment. The filter efficiency results indicated that the hot-pressed PCNMs have excellent removal efficiency of up to 96.8% of fine particulate matter. This research demonstrates that PCNMs have potential as filters for indoor dust removal and will provide a new idea for the development of air filters.

From suspect screening to target analysis: Occurrence of six newly identified compounds in indoor dust from Belgium

2021 ◽  
Vol 197 ◽  
pp. 111193
Author(s):  
Christina Christia ◽  
Giulia Poma ◽  
Noelia Caballero-Casero ◽  
Adrian Covaci
Keyword(s):  
Indoor Dust ◽  
Suspect Screening ◽  
Target Analysis

ON THE TIMING OF THE OLD COPPER COMPLEX IN NORTH AMERICA: A COMPARISON OF RADIOCARBON DATES FROM DIFFERENT ARCHAEOLOGICAL CONTEXTS

Radiocarbon ◽  
2021 ◽  
pp. 1-19
Author(s):  
David P Pompeani ◽  
Byron A Steinman ◽  
Mark B Abbott ◽  
Katherine M Pompeani ◽  
William Reardon ◽  
...  
Keyword(s):  
Native American ◽  
Lake Sediment ◽  
Copper Complex ◽  
Lake Superior ◽  
Copper Mining ◽  
Radiocarbon Dates ◽  
Copper Mines ◽  
Tool Technology ◽  
High Lead ◽  
Old Copper Complex

ABSTRACT The Old Copper Complex (OCC) refers to the production of heavy copper-tool technology by Archaic Native American societies in the Lake Superior region. To better define the timing of the OCC, we evaluated 53 (eight new and 45 published) radiocarbon (14C) dates associated with copper artifacts and mines. We compared these dates to six lake sediment-based chronologies of copper mining and annealing in the Michigan Copper District. 14C dates grouped by archaeological context show that cremation remains, and wood and cordage embedded in copper artifacts have ages that overlap with the timing of high lead (Pb) concentrations in lake sediment. In contrast, dates in stratigraphic association and from mines are younger than those from embedded and cremation materials, suggesting that the former groups reflect the timing of processes that occurred post-abandonment. The comparatively young dates obtained from copper mines therefore likely reflect abandonment and infill of the mines rather than active use. Excluding three anomalously young samples, the ages of embedded organic material associated with 15 OCC copper artifacts range from 8500 to 3580 cal BP, confirming that the OCC is among the oldest known metalworking societies in the world.

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