Spectroscopy blog challenge

We would like to invite you to participate in a new ‘Analytical Challenge’ format: The ‘Spectroscopy blog challenge’. Over the past 5 years the ‘Analytical Challenge’ has established itself as a truly unique quiz series, with a new scientific puzzle published every other month, but this time all readers are invited to solve the puzzle jointly, in blog discussions. Please register at http://blogs.springer.com/abc and participate by sharing your ideas and responding to other participants’ contributions. The authors of this Challenge, E. Pretsch and R. Zenobi, will also join the discussions and help by providing a hint should the trail of discussion lead astray. And please note that there is a prize to be won (a Springer book of your choice up to a value of €75). The winner will be determined based on an evaluation of the relevance of his/her input to solving the ‘Challenge’. In the present challenge spectroscopy is the topic. Please read on...