Comments on: Toxic Sunscreen http://www.sciencebase.com/science-blog/toxic-sunscreen.html Science Blog from Freelance Science Writer David Bradley Thu, 09 Feb 2012 08:25:37 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: David Bradley http://www.sciencebase.com/science-blog/toxic-sunscreen.html/comment-page-1#comment-633066 David Bradley Thu, 27 Aug 2009 14:27:22 +0000 http://www.sciencebase.com/science-blog/?p=4331#comment-633066 Thanks for the input, if I'd thought about it ahead of putting the item together, I'd have contacted you in advance for comment. Thanks for clarifying. Perhaps the point of the research is to have a straightforward method for testing in those regions of the world where unscrupulous manufacturers might be using toxic metals that pass one set of tests instead of the regulated and presumably more expensive purified alternatives. Thanks for the input, if I’d thought about it ahead of putting the item together, I’d have contacted you in advance for comment. Thanks for clarifying. Perhaps the point of the research is to have a straightforward method for testing in those regions of the world where unscrupulous manufacturers might be using toxic metals that pass one set of tests instead of the regulated and presumably more expensive purified alternatives.

]]> By: Colin http://www.sciencebase.com/science-blog/toxic-sunscreen.html/comment-page-1#comment-633065 Colin Thu, 27 Aug 2009 13:58:59 +0000 http://www.sciencebase.com/science-blog/?p=4331#comment-633065 I don't think that sunscreens contain toxic levels of heavy metals. Heavy metals are already pretty easy to detect using atomic absorbtion. Detecting titanium dioxide is a bit more difficult but there is a way that might appeal to the lateral thinking chemist. It is inert and insoluble in just about everything, so with a good balance and a range of solvents you could simply filter it out of the formulation and weigh it. (I have never done this but I am sure it is practical but would be very time consuming.) I don’t think that sunscreens contain toxic levels of heavy metals. Heavy metals are already pretty easy to detect using atomic absorbtion.

Detecting titanium dioxide is a bit more difficult but there is a way that might appeal to the lateral thinking chemist. It is inert and insoluble in just about everything, so with a good balance and a range of solvents you could simply filter it out of the formulation and weigh it. (I have never done this but I am sure it is practical but would be very time consuming.)

]]> By: New ScienceNews http://www.sciencebase.com/science-blog/toxic-sunscreen.html/comment-page-1#comment-635064 New ScienceNews Fri, 21 Aug 2009 12:11:07 +0000 http://www.sciencebase.com/science-blog/?p=4331#comment-635064 <span class="topsy_trackback_comment"><span class="topsy_twitter_username"><span class="topsy_trackback_content">Sciencebase: Toxic Sunscreen http://bit.ly/1YhZjf Full http://bit.ly/Pl7rp</span></span> Sciencebase: Toxic Sunscreen http://bit.ly/1YhZjf Full http://bit.ly/Pl7rp

]]> By: thebeautybrains http://www.sciencebase.com/science-blog/toxic-sunscreen.html/comment-page-1#comment-635065 thebeautybrains Fri, 21 Aug 2009 12:10:34 +0000 http://www.sciencebase.com/science-blog/?p=4331#comment-635065 <span class="topsy_trackback_comment"><span class="topsy_twitter_username"><span class="topsy_trackback_content">RT @sciencebase: Toxic Sunscreen - http://bit.ly/MoInf</span></span> RT @sciencebase: Toxic Sunscreen – http://bit.ly/MoInf

]]> By: David Bradley http://www.sciencebase.com/science-blog/toxic-sunscreen.html/comment-page-1#comment-635066 David Bradley Fri, 21 Aug 2009 12:01:59 +0000 http://www.sciencebase.com/science-blog/?p=4331#comment-635066 <span class="topsy_trackback_comment"><span class="topsy_twitter_username"><span class="topsy_trackback_content">Toxic Sunscreen - http://bit.ly/MoInf</span></span> Toxic Sunscreen – http://bit.ly/MoInf

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