Abstract

In order to support the very high time resolution required to observe short-term variations in nitrates and all other ions represented by electrical conductivity in polar ice, a Fourier transform infrared spectrometer was developed for measurement of deuterium concentration in ice samples, as an additional support for the timescale of ultra-high resolution. The portable instrument provided the possibility to measure deuterium concentration on exactly the same samples as used for measuring nitrate concentrations and liquid electrical conductivity, thus verifying that the original dating of the annual variations in nitrate was correct. We present basic information about how the high-resolution data were obtained and discuss their reliability and significance.

摘要

为了支持极高的时间分辨率，以观察极性冰中电导率代表的硝酸盐和所有其他离子的短期变化，开发了一种傅立叶变换红外光谱仪来测量冰样中的氘浓度，作为额外的支持用于超高分辨率的时间尺度。便携式仪器提供了测量与测量硝酸盐浓度和液体电导率完全相同的样品上氘浓度的可能性，从而验证了硝酸盐年度变化的原始日期是正确的。我们提供有关如何获取高分辨率数据的基本信息，并讨论其可靠性和重要性。