Man kan forgiftes av bly fra både vann, luft og fast stoff. Bly er giftig for alle men aller mest for barn fordi det fører til betydelig, permanent redusert IQ. Vi snakker 5 til 10 poeng. Nok til å ta en person fra smart til ikke smart. Bly lagres i hjerne og ben (knokler). Forhøyet blodverdi betyr egentlig akutt forgiftning. Kvinner som opplever osteoporose etter overgangsalderen frigjør ofte bly fra knoklene og man får en blyforgiftning på kjøpet.
Blyholdig bensin 1920-1996
I bilens barndom på 1920 tallet ønsket man å redusere dunkelyder fra motoren ved å tilsette kjemikalier i bensinen. Man hadde flere alternativer. Blant annet ethanol, som gir ufarlig avgass. Av kommersielle hensyn valgte man en blytilsetning. Med den følge at menneskene fikk i seg bly via pusten. En av de største miljø og helseskandaler i nyere tid. Og fullstendig unødvendig da det var et ufarlig alternativ tilgjengelig. Et eksempel på kynisme. Hvordan kunne myndigheter gå med på dette? Korrupsjon? I Norge ble blyholdig bensin forbudt i 1996. På 70 tallet var bruken på topp. Jeg er født i 1972.
Bly i drikkevann
Rom
De gamle romerne hadde et avansert rørsystem for vann. For at rørene skulle være formbare ble de tilsatt bly. Noe som førte til at beboerne ble forgiftet. Vissnok en medvirkende årsak til at den romerske sivilisasjonen forsvant.
Flint i Michigan 2014
Byen Flint skulle i 2013 spare penger ved å bytte vannkilde. De byttet fra nabobyens Detroits system til Flint River, en elv som går tvers igjennom Flint. Vannrørene her var gamle og hadde bly i seg. Byen behandlet ikke vannet med stoffer som gjør at rørene ikke lekker bly. Vannet ble blyforgiftet.
Noen hovedpunkter Flint tidslinje (NPR – National Public Radio). May 2014: Residents Complain about smell and color of water. August: E. coli And Total Coliform Bacteria Detected. The city addressed the problem by increasing chlorine levels in the water. Oct. 13: General Motors stop using Flint River water, fearing corrosion in its machines. “Because of all the metal. You don’t want the higher chlorine water (to result in) corrosion,” GM spokesman Tom Wickham tells MLive. “We noticed it some time ago (and) the discussions have been going on for some time.” Jan. 2, 2015: Disinfection Byproducts Detected, trihalomethanes TTHM, possibly carcinogenic. Byproducts that occur when chlorine interacts with organic matter in the water. Feb. 25: Tests Show High Lead Levels In Home. Michigan Radio reported the water at Lee Anne Walters home “turns up with a lead content of 104 parts per billion. Fifteen parts per billion is the [Environmental Protection Agency]’s limit for lead in drinking water.” In April, Walters says her child was diagnosed with lead poisoning. An independent test done by Virginia Tech researchers finds lead levels at 13,200 ppb. Water is considered hazardous waste at 5,000 ppb.
Blystøv
Notre Dame brannen 2019
Den store katedralen Notre Dame midt i Paris var konstruert med bly i tak og spir. Muligens ble dette brukt for å hindre råte. I en storbrann 15. april 2019 brant deler av katedralen og spesielt taket og spiret. Resultatet var tonnevis med blystøv ut over Paris by. Verdiene var høyest nær katedralen og i samme reting som vinden blåste den dagen. Jeg hørte om dette første gangen dag 3 The art of antiaging Summit 2022 med Brian Vaszily som intervjuet Wendie Trubow. Hun var i Paris rett etter brannen og opplevde blyforgiftning.
NY Times 16. september 2019. Flames engulfed 460 tons of lead scattering dangerous dust onto the streets and parks of Paris.
Overflatetester
Levels of lead dust deposited near the cathedral were up to 1,300 times higher than French safety guidelines. The Health Ministry has ruled that lead levels over 70 micrograms per square meter, or 6.5 micrograms per square foot, amount to “a risk of lead contamination for exposed children’’ and should lead to “a quick intervention.” But that pertains to indoor spaces. In Paris, officials have waffled on the proper outdoor threshold. In the weeks after the fire, they cited 93 micrograms per square foot as the guideline. But as public criticism reached a fever pitch in mid-July, regional health officials essentially raised the limit, citing a new figure of 464. But it took a month before city officials conducted the first lead tests at a school close to Notre-Dame. Even today, city and regional health officials have not tested every school in the proximity of the cathedral. The tests showed levels of lead dust above the French regulatory standard for buildings hosting children in at least 18 day care centers, preschools and primary schools. In dozens of other public spaces, like plazas and streets, authorities found lead levels up to 60 times over the safety standard. Soil contamination in public parks may be among the biggest concerns. The Culture Ministry, which is responsible for cleaning the site and rebuilding Notre-Dame, also failed or refused to enforce safety procedures for workers, leaving them exposed to lead levels more than a thousand times the accepted standard.
The Paris Prefecture Police Headquarters sits directly across from Notre-Dame. A day care center inside the police building was hurriedly closed, for fear it could be crushed by falling debris. Within days, the day care center, which was for the children of officers, was tested for lead. In some areas, like the “millipede playroom,” the tests found lead levels up to 2.5 times the French standard for buildings hosting children, according to a confidential police document. The report offers evidence that the French authorities were aware of the threat of lead contamination within days of the fire but kept quiet. The officers’ children were moved to a second day care center farther away from Notre-Dame, in another building of the headquarters. As many as 80 children would play in this second day care center in the coming weeks. But it turned out that second building was contaminated, too. More than 20 measurements showed lead levels at or above the threshold for buildings hosting children. They included the “goblins” playroom and rooms where nurses fed children with baby bottles. Windows in the building had been left open during the fire, according to the confidential police report. Other tests found at least six offices were contaminated with lead levels up to 17 times higher than the regulatory threshold. Experts said the officers could have been vulnerable both to inhaling the dust as it swirled during the fire and ingesting it afterward. In early May, city officials finally closed the second day care center for decontamination and informed officers of the situation. But still no broader alarm was sounded.
Blodverdier
The island Ile de la Cite in the Seine where Notre-Dame is located has gotten most attention. The regulatory threshold for concern in France is 2.5 micrograms per deciliter, but experts warn that any level of lead can cause harm. Ms. Souleliac, who works on the Ile de la Cite but does not live there, had her daughter tested 2 months after the fire. The girl had 1.1 micrograms of lead per deciliter, below the French threshold for concern of 2.5 micrograms.
Catherine Leroy had not thought about potential health risks for her 2 1/2 year-old daughter until news articles mentioned lead concerns and friends warned her about toxic particles. Ms. Leroy lives on Rue Chanoinesse, less than 300 feet from the cathedral. The child was tested in mid-May. The results showed lead levels of 1.9 micrograms per deciliter. Those most in danger? The restoration workers. The authorities shut down work at Notre-Dame in July, saying stricter measures were needed “in accordance to labor inspection’s requests.”
Zambia by med blyverk
A Kabwe, Zambia lead smelter (NPR) closed in 1994. For nearly 100 years, smoke from the smelter had been releasing heavy metals, including lead, in the form of dust. Children have grown up playing in that dust, inhaling it — and being poisoned by it. In 2016 The World Bank lent the Zambian government $65.5 million for a five-year project to clean up lead-contaminated areas
and treat the people affected by lead poisoning. How are the people of Kabwe faring 2 1/2 years later (2019)? To identify children with abnormally high lead levels, CDC (Centers for Disease Control and Prevention) uses a reference
level of 5 micrograms of lead per deciliter of blood. A deciliter is a metric measure equal to about one-tenth of a quart. The lowest blood level in the children measured in Kabwe was 13.6 micrograms per deciliter; the average was 48.3; and the highest couldn’t be measured because more than 25% of the children had levels higher than the 65 micrograms per deciliter the instruments could measure.
Blyammunisjon
Jegere insisterer på å bruke blyammunisjon istedenfor stål.
Blybekkene
Oppdatering 4. september 2021. Vann rundt skytebaner er ofte forurenset med bly fra ammunisjonen. Blybekkene. Turfolk tenker det er greit å drikke fra bekkene. De aner ikke at vannet kommer fra ei myr hvor det ligger nesten en million kilo bly. Skytebanen på Skytterkollen i Bærum. Vannet rundt er farlig for mennesker, hunder og skogens dyr. Bly er en nervegift og gir lavere IQ. Det vet man blybensin og blyholdig maling. Bloggpost om drikkevannet i Asker og Bærum.
Vilt som spiser blyhagl skades og dør
Oppdatering 16. juni 2022. Idag leste jeg en interessant artikkel på Robert F. Kennedy Jr. sitt prosjekt childrenshealthdefense Autopsy of Eagle Reveals Devastating Impact of Lead Poisoning. Når jegere skyter vilt etterlater de ofte innvoller i naturen. Ikke noe galt i det. Innvollene blir fort borte fordi de er mat for andre dyr. Men har man brukt blyammunisjon vil åtseleterne få i seg dette også. De forgiftes og kan oppleve alvorlig skade og dø. “Lead impacts every system in the body,” according to Krysten Schuler, a wildlife ecologist at the Cornell Wildlife Health Lab. Exposed birds can go blind, lose their ability to digest food and struggle to fly, along with a litany of other issues.
Når jegere ivrer for at blyammunisjon skal være tillatt så ødelegger man for seg selv (“skyter seg selv i foten”). Fordi det forgifter levende vilt og dermed blir det mindre vilt totalt, også på jegerne.
