Nanopartículas en los lodos de depuradoras puede terminar en la cadena alimentaria

Las plantas y los microbios pueden absorber las nanopartículas sintéticas aumentadon la concentración dentro de los depredadores en la cadena alimentaria, según dos nuevos estudios.

Las nanopartículas se pueden hacer de un sinnúmero de diferentes materiales y su seguridad no está bien entendida. Sin embargo, las partículas minúsculas se infunden en cientos de productos de consumo  que van desde coberturas transparentes para alimentos  hasta calcetines antiolor.

A partir de ahí, se pueden arrastrar en el drenaje, en última instancia, terminan en los lodos residuales de plantas de tratamiento de aguas residuales. Alrededor de tres millones de toneladas de lodos secos para darles salida posteriormente se mezcla con el suelo agrícola.

Toca comer. Nanopartículas en lodos. Marisol Collazos Soto

«Queríamos estudiar la posibilidad de las nanopartículas de entrar en la cadena alimentaria de esta manera», dijo el toxicólogo ambiental Paul Bertsch de la Universidad de Kentucky. «Lo que encontramos nos sorprendió realmente.»

Las nanopartículas sintéticas son cerca de 1 a 100 nanómetros de tamaño (tan pequeños como algunos virus) y de plata de ley, dióxido de titanio, óxido de zinc y otras sustancias. En virtud de su pequeño tamaño y estabilidad, pueden anular los olores, evitar la descomposición de los alimentos y absorber la dañina radiación ultravioleta, entre otras hazañas.

Pero el conocimiento sobre sus impacto para el medio ambiente se encuentra todavía en un estado de  infancia,  según Bertsch.

Para explorar la absorción de las nanopartículas en la cadena alimentaria, el equipo de Bertsch cultivó plantas de tabaco en un invernadero hidropónico. Mientras que las plantas crecieron, el equipo agregó nanopartículas de oro muy estable al agua para imitar las nanopartículas de los consumidores en los lodos de aguas residuales.

Las nanopartículas de oro acumulado en el tejido de la hoja de tabaco, y  los gusanos picudos del tabaco que se comieron las plantas acumulan concentraciones de nanomateriales de seis a 12 veces mayores que en la planta.

«Esperábamos que [las nanopartículas] se acumulasen, pero no biomagnificarse así», dijo Bertsch, coautor del estudio.

Los microbios depredadores, en un estudio separado, publicado el 19 de diciembre en la revista Nature Nanotechnology, también mostraban niveles concentrados de nanopartículas de seleniuro de cadmio después de comer más  los microbios.

«Para mí, es realmente interesante ver dos modelos diferentes con dos diferentes nanopartículas  que llegan a conclusiones  que se refuerzan entre sí», dijo Patricia Holden, un microbiólogo del medio ambiente en la Universidad de California, Santa Bárbara,  coautora del estudio basado en los microbios.

Por lo menos cinco agencias gubernamentales (EPA, FDA, NIH, el NIOSH y NIST) han acogido esfuerzos para investigar los riesgos de la nanotecnología para la salud y el medio ambiente. Y mientras que los metales pesados y otras toxinas en los lodos son regulados por el gobierno federal, las nanopartículas artificiales no lo son. Eso puede ser motivo de preocupación dado el amplio uso de los lodos en suelos, donde las nanopartículas se acumulan con el tiempo.

Fuente: WIRED SCIENCE

Related Posts with Thumbnails
You can leave a response, or trackback from your own site.

2 Responses to “Nanopartículas en los lodos de depuradoras puede terminar en la cadena alimentaria”

  1. Gabriel Rueda dice:

    Me encantó el articulo. Deseo seguir recibiendo más información sobre el tema. Mil gracias

  2. I think what you composed made a bunch of sense. But, think
    about this, what if you were click here click here now please click here click here to view click more click here digital click here for more details alternatives to click here click here to join the meeting click here button click here to click here to view listings wcag click here click here to open click here website click here to respond click here app click here link click here for click for more click here for more click be click here for more info click on the link instead of click here click here accessibility click this link clickhere click to see more link here click here to learn more click for more info click here publishing clicking here click here to find out click here alternatives here are the links or click here click to learn more click here for more info button clicking here will get you there click here for details click click here click here to buy click here to continue click here picture click here link html here is a link click here labs click to see click for details problem with click here please click here to contribute by clicking here heres the link click here to join click here to start usability click here more information click here hyperlink best practices click here to access click here click here see the link more information here more info here link clicking for more information go to click to web click to read click right here click more info click here usability click here to preview click here to go to click here to go click here to find click here to start summary click here for the click here game click here book click movie click here now picture click me click with click this click on that web click your click we click click it now no click click on me just click here i am here click me click with me click on t click that click on here click here and great click me click here to open web page click here dallas click here agency click here please click here inc click beetle click here amino click here meaning click here adobe here is the link below link pranks click good hyperlinks follow the link hyperlink example see link below please click on the link below for further details tap click read click here html click here for more information button click here to see more details learn more click to continue game click to continue button ui ux click here click here ada click on the following link click here for more information click here to start book click here to start hardcover click here to join meeting click here to view message click here to start onboarding click here to make an appointment click here to get certificate click here to certify click here to join the meeting teams click here clipart click here arrow click here to subscribe click here for the accessible version links here if you click on the link here here meaning here if you need me click link text here click links click and go click on this link link corto click the link click practice see below a link click on a link for more information click here one click link click me sign click a link avoid click here find out more here click on link click here to find out more learn more alternatives digital advertising agency click the link below we just click that click me click just click on it just click on click or click on them click no click me up click in the click in to find text on a web page you would press clique or click click or clique you are here labs press here button digital advertising companies why are we here text top linking text read more here please see a link below to be in accordance with hereas here is to everyone is here text funny links to text this is the link text verb stephanie link wrong read more examples read here qa from home link you link to me learn more here html click link html click here from here and out from here and on click on the link below in spanish click here to read click here pictures bad examples of accessible websites accessibility links your text to link here web accessibility click here please click the link links click click on links click here links accessibility click here we are here to help you text me web tell link site phrase example link with here on end digital click clicking practice click to text please follow the link below learn more link click agency accessible links tip links connect the right link to the site the click learn about it someone smashing something see it click it see a link and picture are below read more links accessibility read more click on html reach out here link quick click for link please follow this link link without his top link with me link stuff link out link fo learn more link in html klik link is linking important to web is it this or that instead of about us i can’t hyperlink my texts anymore here-to-for here-in meaning here you have the pictures here in the here here phrase good phrases for a page for more information please visit discourage concrete nouns descriptive linking creating a read more link in html clicking with someone clicked on a bad link click the link below to see the virtual tour click meaning problem click here and read the complete review click as a verb click and anchor spot turns color catchy button phrases buy web links best generic link are instead of is anchor trip link for sale anchor link begin with books you are here agency will link ever talk that will be it read the full article here it will be on me i will explain it to you in more detail hit the links meaning here to help you here are some information about me bad address in text read aslink click here button transparent png ux of click here to see more info link for more information please click here for further options click here for further information click here click.here click my link please click here to see more click here to read the full article click here to read the article click here hyperlink click here examples click h e r e click for more information click here button gif click here button html writing out website links where to find the links t web links examples we clicked meaning usable link read to me links quickmeme click here to view preview website before clicking link practice clicking post links here please see the link below for more information please click the link to go there please click the link below meaning please click the following link please click on the link below meaning please click on the link phrase with link on this link on the link or in the link learn more text link learn more links just click here to watch is this link bad i have put the link below here are the details below for link find-more-here clicking on the clicking on links click learn more click here to read more click here to comment click here for full details best web links as you can see here article click click here to start movie click here buttons click here button transparent click here to start audiobook click here to start denis markell click click he your links will or will be will be here in the where to find the links to make website accessibility links web-t web links direct web link page web link clicker web accessibility links we will be here we clicked or we cliqued wcag redundant links blogs want to see more of her w3c link tips please symbol tip phrases this link will work for anyone the link take me the katt text number text with stuff on top of it text mechanic alternative text click tell me where we go from here tell me more website team is clicking stephanie link blog smashking vs link smashing phone reference sign-link magazine short link clicker see more here see more details see links to website scan website for text said vs stated removal phrase right before a link recommends a link real world clich group read the clique read out verb read on web read more on read more links read more at read more about it read briefly yours online read and click read about it here rather a no then never know quick links ux quick links meaning quality assurance as a verb qa pictures qa home post your links here post link here please refer to the link below please read this to me please read this for me please read this article please go through the following link please follow link please find the link please click on this link please click on the following link please click here to view these documents phrase site page clicker one click links on links write a awesome title?
    I ain’t saying your information is not solid., but suppose you added something that grabbed
    a person’s attention? I mean Nanopartículas en los lodos
    de depuradoras puede terminar en la cadena alimentaria | ¡Toca comer!
    is kinda boring. You might look at Yahoo’s front page and watch how they create news titles to grab viewers interested.
    You might add a video or a picture or two to grab readers interested about what you’ve written. Just my opinion, it would make
    your website a little livelier. https://fonzo.info/user/k8hypsb953 https://mir-kontrastov.ru/user/y7ljfak681 http://xn--d1abamebfd0avbpdfcx6e.xn--p1ai/user/p9mwywi078

Powered by WordPress | Designed by: Free WP Themes. | Thanks to Best Free WordPress Themes, Find WordPress Themes Free and Free WP Themes