Reduction of Argon Consumption by an Air-cooling Torch for Inductively Coupled Plasma Mass Spectrometry
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    Abstract:

    An air-cooling torch was developed for argon-based inductively coupled plasma mass spectrometry (ICP-MS). The plasma gas aperture-width was decreased to 0.5 mm to permit the ignition of argon plasma at an RF power of 800 W with a plasma gas of 8.0 L/min. A stable argon plasma was achieved at an RF power up to 1,600 W by introducing 20 L/min of air as cooling-gas. The signal intensity of 89Y+ obtained with the present air-cooling torch at an RF power of 1,550 W and a plasma gas of 8.0 L/min argon was around 20 % higher than that obtained with a normal torch operated at normal condition. The ratio of oxide ion (<2.0 %) for Ce with the present torch was comparable to those obtained with a normal torch. Long-term stability (over 12 h) and the service life (over one year) of the present torch were also comparable to a normal torch.

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Naoto Yarie, Yanbei Zhu*, Yuki Inoue, Ken Kakegawa, Hidekazu Miyahara, Akitoshi Okino*. Reduction of Argon Consumption by an Air-cooling Torch for Inductively Coupled Plasma Mass Spectrometry[J]. Atomic Spectroscopy,2024,45(6):456-461.

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  • Online: November 13,2024
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