Sentence examples for lead has decreased from inspiring English sources

Although exposure to lead has decreased in many countries, significant concerns remain about continued exposure of children to lead.

First, the samples were collected about 10 years ago, and environmental lead has decreased further since that time.

Although the total Swedish emission of lead has decreased, children may still be exposed to lead in air from other regions or countries in the vicinity [ 20].

Exposure to lead has decreased substantially in the United States over the past few decades, primarily owing to public health measures including the government-mandated ban of residential lead-based paint in 1978 and phaseout of leaded gasoline in the 1970s and 1980s (ATSDR 2007).

In December 2008, a ComRes poll showed the Conservative lead had decreased dramatically, though by February 2009 it had recovered to reach 12 points.

Zahran et al. (2010) compared aggregate blood lead levels derived from the Louisiana Childhood Blood Lead Surveillance System (CBLSS) pre-Hurricane Katrina to levels post-Hurricane Katrina and found that median blood lead had decreased.

Over the last two decades, atmospheric concentrations of lead have decreased significantly around the globe as more and more nations have chosen to remove tetraethylead from gasoline (Thomas et al. 1999).

Since the legislation in the 1980s governing lead use, lead exposure has decreased substantially in the United States (Muntner et al. 2005; Pirkle et al. 1998).

Lead exposure has decreased drastically since leaded gasoline was banned internationally and since the use of lead compounds began to decline in the 1970s.

Lead in gasoline remains a major problem, although the lead content has decreased in many countries in the last few years.

Due to this higher threshold for detection and the fact that EP levels also increase in iron deficiency, use of this method for detecting lead exposure has decreased.