div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=detection-of-nanogram-quantities-of-sulphur-hexafluoride-by-electron-capturehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Detection of Nanogram Quantities of Sulphur Hexafluoride by Electron Capture Methods loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader038vdocumentsmxreader038viewer2022100520575068201a28ab0f07aebab4html5thumbnails1jpg width=140 height=200 divp© Nature Publishing Group1962pdiv