60秒科学:Judging a Book by Its Odor

Judging a Book by Its Odor
A study in the journal Analytical¹ Chemistry identifies various organic compounds that old books give off and that can be analyzed² noninvasively, offering important clues to an historic work's condition and prognosis. Steve Mirsky reports

“This book stinks³!” is really a bad review. But even a classic work can start to smell when it gets old enough. Now chemists have developed a technique that identifies what kind of degradation⁴ process an old book or historical document is going through, based on the odors it gives off. The report appears in the American Chemical Society journal Analytical Chemistry.

An old book’s familiar musty smell is due to hundreds of different volatile⁵ organic compounds gassing out from the paper and other materials, such as the binding⁶. The particular blend of compounds results from specific degradation pathways. Conventional analysis techniques require small samples of the work for testing, further damaging the book. But analyzing⁷ the gases coming off of the old books is noninvasive.

The researchers identified 15 organic compounds that made good markers to track the condition of books. They note that their system could be used to evaluate the type of document, its present condition and its likely future, thus helping⁸ preservationists map a strategy to save historical works.
 

1 analytical   

adj.分析的；用分析法的

参考例句：

• I have an analytical approach to every survey.对每项调查我都采用分析方法。
• As a result,analytical data obtained by analysts were often in disagreement.结果各个分析家所得的分析数据常常不一致。

2 analyzed   

v.分析( analyze的过去式和过去分词 )；分解；解释；对…进行心理分析

参考例句：

• The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
• The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程，因为对他来说，爱是个不可分析的迷。 来自《简明英汉词典》

3 stinks   

v.散发出恶臭( stink的第三人称单数 )；发臭味；名声臭；糟透

参考例句：

• The whole scheme stinks to high heaven—don't get involved in it. 整件事十分卑鄙龌龊——可别陷了进去。 来自《简明英汉词典》
• The soup stinks of garlic. 这汤有大蒜气味。 来自《现代英汉综合大词典》

4 degradation   

n.降级；低落；退化；陵削；降解；衰变

参考例句：

• There are serious problems of land degradation in some arid zones.在一些干旱地带存在严重的土地退化问题。
• Gambling is always coupled with degradation.赌博总是与堕落相联系。

5 volatile   

adj.反复无常的，挥发性的，稍纵即逝的，脾气火爆的；n.挥发性物质

参考例句：

• With the markets being so volatile,investments are at great risk.由于市场那么变化不定，投资冒着很大的风险。
• His character was weak and volatile.他这个人意志薄弱，喜怒无常。

6 binding   

有约束力的，有效的，应遵守的

参考例句：

• The contract was not signed and has no binding force. 合同没有签署因而没有约束力。
• Both sides have agreed that the arbitration will be binding. 双方都赞同仲裁具有约束力。

7 analyzing   

v.分析；分析( analyze的现在分词 )；分解；解释；对…进行心理分析n.分析

参考例句：

• Analyzing the date of some socialist countries presents even greater problem s. 分析某些社会主义国家的统计数据，暴露出的问题甚至更大。 来自辞典例句
• He undoubtedly was not far off the mark in analyzing its predictions. 当然，他对其预测所作的分析倒也八九不离十。 来自辞典例句

8 helping   

n.食物的一份&adj.帮助人的，辅助的

参考例句：

• The poor children regularly pony up for a second helping of my hamburger. 那些可怜的孩子们总是要求我把我的汉堡包再给他们一份。
• By doing this, they may at times be helping to restore competition. 这样一来, 他在某些时候,有助于竞争的加强。