This is yearly maintenance kit quick start guide for Picarro's HAPs G2xxx analyzers.

This is the yearly maintenance kit quick start guide for Picarro's GHG, L2xxx, and EtO analyzers.

This is the yearly maintenance kit quick start guide for Picarro's G4xxx analyzers.

This document serves as a general guide on how to approach and successfully calibrate a Picarro cavity ring-down spectrometer (CRDS). The steps described herein can be used on isotopic and/or concentration analyzers that measure CO₂, CO, CH₄, H₂O, C₂H₂, C₂H₄, C₂H₆, CH₂O, O_2…

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1. Scope

1.1 This guide describes analytical methods for determining formaldehyde concentrations in air.

1.2 The guide is primarily focused on formaldehyde measurement technologies applicable to indoor (including in vehicle and workplace) air and associated…

This guide helps users find manuals and product information and correctly start up and shut down their analyzer before shipping it back to Picarro. 

The Picarro G1301 has been designed specifically to focus on the needs of the atmospheric monitoring community and to serve as the backbone for greenhouse gas monitoring networks.

Vaporized hydrogen peroxide (VHP) treatment is the dominant approach for decontamination in cleanrooms, restricted access barrier systems, and isolators, commonly a part of manufacturing operations for high-potency active pharmaceutical ingredients (HPAPI), large molecule drugs, and aseptic processing for dosage form fill and finish. Irrespective of the environment, decontamination is…

Stable isotope analysis relies on the simultaneous or near-simultaneous measurement of two individual species. In the case of the Picarro G1101-i and G2101-i gas analyzers, these two species are ¹²C¹⁶O₂ and ¹³C¹⁶O₂, which we denote ¹²C and ¹³C for simplicity. In the G1101-i,…

The Picarro G1101-i and G2101-i gas analyzers provide field measurements of the stable isotope ratio d¹³CO₂ with a precision of 0.3 permil in five minutes. In an isotope ratio mass spectrometry (IRMS) laboratory, it is customary to dry the samples to very low dew points (< - 45C) prior to isotope analysis. For field work, however, drying the…

In this installment, we hear from Picarro scientists Sean MacMullin and Francois Xavier Rongere about their perspectives on the natural gas industry and methane emissions measurement, quantification, and abatement.

Join the conversation! Register for the Picarro Gas Community today: https://community-gas.picarro.com/registration/

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In the latest episode of the PCG Volume 3 podcast, "Client Program Management & Scaling," we delve deep into the realm of program management with Picarro's latest team members, Eric Chan and Tanner Orland. The main focus of this podcast is to provide listeners with an understanding of what…

We sit down with Picarro's Francois Rongere, Sr. Director of Solution Architecture for Climate and Safety to discuss how companies are navigating PHMSA’s recent notice of proposed rule making for gas operators to embrace Advanced Mobile Leak Detection (AMLD) and how Picarro can help our clients during this transition.

You can catch all of The Community Green episodes on…

A potent greenhouse gas present in the agriculture, energy, and other sectors, methane is in the spotlight, ahead of this year’s COP28 in the United Arab Emirates. But it’s also a big feature in discussions at EU level. Here, the EuroGas Podcast takes a look at the work of European gas distribution system operators (or DSOs) and see how upcoming EU…

Exploration of unconventional natural gas reservoirs such as impermeable shale basins through the use ofhorizontal drilling and hydraulic fracturing has changed the energy landscape in the USA providing a vastnew energy source. The accelerated production of natural gas has triggered a debate concerning thesafety and possible environmental impacts of these operations. This study investigates…

A novel instrument, based on cavity-ringdown spectroscopy (CRDS), has been developed for trace gas detection. The new instrument utilizes a widely tunable optical parametric oscillator (OPO), which incorporates a zinc–germanium–phosphide (ZGP) crystal that is pumped at 2.8 μm by a 25-Hz Er,Cr:YSGG laser. The resultant mid-IR beam profile is nearly Gaussian, with energies exceeding 200…

Cavity enhanced spectroscopy (CES) methodology provides a much higher degree of sensitivity than that available from conventional absorption spectrometers. The aim of this chapter is to present the fundamentals of the method, and the various modifications and extensions that have been developed. In order to set the stage, the limitations of traditional absorption spectrometers are…

High fluences inside cavity ring-down spectroscopy optical resonators lend themselves to fluorescence or Raman spectroscopy. An instrument at 488 nm was developed to measure extinction, and fluorescence of aerosols. A detection limit of 6 x 10^-9 cm^-1Hz^-1/2 (0.6 Mm^-1Hz^-1/2) was achieved. The fluorescence spectral power collected from a single fluorescent microsphere was 10 to 20 pW/nm.…

An historical overview of laser-based, spectroscopic methods that employ high-finesse optical resonators is presented. The overview begins with the early work in atomic absorption (1962) and optical cavities (1974) that led to the first mirror reflectivity measurements in 1980. This paper concludes with very recent extensions of cavity-enhanced methods for the study of condensed-phase media…

We describe the application of cavity ring-down spectroscopy (CRDS) to the detection of trace levels of ethylene in ambient air in a cold storage room of a fruit packing facility over a several month period. We compare these results with those obtained using gas chromatography (GC), the current gold standard for trace ethylene measurements in post-harvest applications. The CRDS instrument…

Recent measurements of carbon isotopes in carbon dioxide using near-infrared, diode-laser-based cavity ring-down spectroscopy (CRDS) are presented. The CRDS system achieved good precision, often better than 0.2‰, for 4% CO₂ concentrations, and also achieved 0.15–0.25‰ precision in a 78 min measurement time with cryotrap-based pre-concentration of ambient CO₂…

Researchers investigating global climate change need measurements of greenhouse gases with extreme precision and accuracy to enable the development and benchmarking of better climate models. Existing atmospheric monitors based on non-dispersive infrared (NDIR) sensors have known problems – they are non-linear, sensitive to water vapor concentration, and susceptible to drift. Many cannot…

Eleven instruments for the measurement of ambient concentrations of atmospheric ammonia gas (NH₃), based on eight different measurement methods were inter-compared above an intensively managed agricultural field in late summer 2008 in S. Scotland. To test the instruments over a wide range of concentrations, the field was fertilised with urea midway through the experiment, leading…

This study demonstrates the application of Wavelength-Scanned Cavity Ring-Down Spectroscopy (WS-CRDS) technology which is used to measure the stable isotopic composition of water. This isotopic water analyzer incorporates an evaporator system that allows liquid water as well as water vapor to be measured with high precision. The analyzer can measure H…

A continuous-flow cavity ring-down spectroscopy (CRDS) system integrating a chromatographic separation technique, a catalytic combustor, and an isotopic¹³C/¹²C optical analyzer is described for the isotopic analysis of a mixture of organic compounds. A demonstration of its potential is made for the geochemically important class of short-chain hydrocarbons. The system…

Methane is a potent greenhouse gas that has a short-term global warming impact. It comes from a variety of natural and anthropogenic sources which include wetlands, landfills, oil/gas/coal extraction activities and natural gas distribution leaks. Locating and containing these emissions are critical to minimizing their environmental impacts and economically beneficial when retrieving large…

Preservation and restoration of wetlands have the potential to help sequester large amounts of carbon due to the naturally high primary productivity and slow turnover of stored soil carbon. However, the anoxic environmental conditions present in wetland soils are also the largest natural contributor to global methane emissions. Therefore, uptake, storage, and loss of CO₂ and CH…

High-precision greenhouse gas (GHG) measurements in remote locations are typically conducted by mobile labs that host cumbersome and high-power analyzers.
The GasScouter is a new generation of high-performance and low-power GHG analyzers.
In this poster, we introduce the GasScouter and present the results collected through various lab testing and field deployments to validate the…

Natural gas analysis and methane specifically have become increasingly important by virtue of methane’s 28-36x greenhouse warming potential compared to CO₂ and accounting for 10% of total greenhouse gas emissions in the US alone. Determining the specific fingerprint of methane sources by quantifying the ethane to methane (C2:C1) ratios provides us with means to understand…

In the last several years, economically motivated adulteration (EMA) of foods has received increased attention. Two popular targets are lemon juice and honey For both of these types of adulteration analyses, the FCC is evaluating the use of Cavity Ring Down Spectroscopy (CRDS) to establish its suitability in comparison to the well established technique Isotope Ratio Mass Spectrometry IRMS…

Nitrous oxide (N₂O) gas is among the major contributors to global warming and ozone depletion in stratosphere. Quantitative estimate of N₂O production in various pathways and N₂O fluxes across different reservoirs is the key to understanding the role of N₂O in the global change. To achieve this goal, accurate and concurrent measurement of both N…

Photosynthesis and respiration of CO, by forests are two major unknowns in the global carbon cycle. They are the two largest and most variable fluxes, and their difference currently acts as a global net sink. With this project (2017-2020) we aim to provide new insights in the forest carbon balance by separately quantifying photosynthesis and respiration using atmospheric measurements. The…

Oxygen is a major and vital component of the Earth atmosphere representing about 21% of its oomposition. It is consumed or produced through biochemical processes such as oombustion, respiration, and photosynthesis. Although atmospheric oxygen is not a greenhouse gas, It can be used as a top down constraint on the carbon cycle.The variation observations of oxygen in the atmosphere are…

Particulate matter affects more people than any other ambient air pollutant, leading to increased risk of cardiovascular and respiratory diseases.  Levels of PM10 and PM2.5 in the developing world, especially southeast Asia and the Indian subcontinent, routinely exceed World Health Organization guidelines, often by a factor of 10 or more.  Despite their importance to poor air…