The method measures small amounts of atmospheric pollutants. A common method measures the amount of nitrogen monoxide by reacting it with ozone. The light made has a wavelength range of 600 to 2800 nm.
ð ə WORD_BOUNDARY m ɛ θ ə d WORD_BOUNDARY m ɛ ʒ ə ɹ z WORD_BOUNDARY s m ɔ l WORD_BOUNDARY ʌ m aʊ n t s WORD_BOUNDARY ʌ v WORD_BOUNDARY æ t m ə s f ɛ ɹ ɪ k WORD_BOUNDARY p ə l uː t ə n t s WORD_BOUNDARY ʌ WORD_BOUNDARY k ɑ m ə n WORD_BOUNDARY m ɛ θ ə d WORD_BOUNDARY m ɛ ʒ ə ɹ z WORD_BOUNDARY ð ɪ WORD_BOUNDARY ʌ m aʊ n t WORD_BOUNDARY ʌ v WORD_BOUNDARY n aɪ t ɹ ə d̠ʒ ə n WORD_BOUNDARY m ʌ n ɑ k s aɪ d WORD_BOUNDARY b aɪ WORD_BOUNDARY ɹ ɪ æ k t ɪ ŋ WORD_BOUNDARY ɪ t WORD_BOUNDARY w ɪ ð WORD_BOUNDARY oʊ z oʊ n WORD_BOUNDARY ð ə WORD_BOUNDARY l aɪ t WORD_BOUNDARY m eɪ d WORD_BOUNDARY h ʌ z WORD_BOUNDARY ʌ WORD_BOUNDARY w eɪ v l ɛ ŋ θ WORD_BOUNDARY ɹ eɪ n d̠ʒ WORD_BOUNDARY ʌ v WORD_BOUNDARY s ɪ k s h ʌ n d ɹ ɪ d WORD_BOUNDARY t ə WORD_BOUNDARY t uː WORD_BOUNDARY θ aʊ z ə n d WORD_BOUNDARY eɪ t h ʌ n d ɹ ɪ d WORD_BOUNDARY ɛ n ɛ m WORD_BOUNDARY