内容摘要：The court heard the case was then passed to detectives from the Online Child Abuse Investigation Team at Cheshire Police.

The court heard the case was then passed to detectives from the Online Child Abuse Investigation Team at Cheshire Police.

The trouble is, the combination of elements used is toxic and that's still a problem more than a century later. And it's a particular problem when it comes to old books.Victorian bookbinders used arsenic as well as mercury and chrome to create striking covers. And unlike domestic items, books have survived in archives around the world, creating a 21st Century problem from 19th Century fashion.

Prolonged exposure to multiple green books can cause low level arsenic poisoning.Long-term exposure can cause changes to the skin, harm to the liver and kidneys and a reduction in red and white blood cells, which can lead to anaemia and an increased risk of infections.In 2019, an attempt to tackle the problem was set up in Delaware between the Winterthur Museum and the state university.

The Poison Book Project tested books and drew up a list of titles which are potentially harmful to humans. These included four books in the National Library of France, which were immediately withdrawn.Inspired by this, Erica Kotze called on her colleague Dr Pilar Gil, who trained as a biochemist before working in Special Collections at the University of St Andrews.

Dr Gil took a practical approach to surveying the thousands of historic books in their collection.

"The most important thing was to find a non-destructive, portable instrument that could tell us if it was a poisonous book or not," she says.The boy was found by a fisherman, Matthew O'Halloran, from Corofin, County Clare.

He spotted a body face down with arms extended in the water between Doolin and the Aran Islands shortly after 10:00 on 28 July.Mr O'Halloran alerted the Irish Coast Guard and its members retrieved Zhihan's body and brought it ashore at Doolin.

The coroner said post-mortem results had confirmed that Zhihan died from multiple traumatic injuries consistent with a fall from a height."It is clear from evidence we heard that Zhihan slipped off the cliffs rather than any other way. His death would have been very quick - instantaneous."